Decimals

Problem 501

Convert $0.512 \mathrm{~mJ}$ to $\mathrm{cJ}$ .

See Solution

Problem 502

Calculate $14.7 \times 11.361$ and confirm it equals $167.0067$ .

See Solution

Problem 503

Mr. Bonilla bought 3.75 lbs of pears at \$0.92/lb and 2.1 lbs of apples at \$1.10/lb. What is his total cost?

See Solution

Problem 504

Convert $6.33 \times 10^{-10} \mathrm{~g}$ of salt to milligrams.

See Solution

Problem 505

Multiply: $25.04 \times 3.005=$

See Solution

Problem 506

Calculate $3.2 - (-5.7)$ and simplify the expression.

See Solution

Problem 507

Calculate the product of 25.04 and 3.005. What is $25.04 \times 3.005$ ?

See Solution

Problem 508

Calculate the difference: $546.19 - 3.068$ . What is the result?

See Solution

Problem 509

Convert $4 \frac{1}{8}$ to decimal and explain why Jeremy thinks it's 4.18. What is $4 \frac{1}{8}=$ ?

See Solution

Problem 510

Convert $7 \frac{5}{8}$ to decimal and explain why Ariel thinks it's 7.58. What is the correct decimal? $7 \frac{5}{8} =$

See Solution

Problem 511

Set up long division to find the decimal expansion of $\frac{23}{33}$ . What is the result?

See Solution

Problem 512

Find the decimal expansion of $\frac{23}{33}$ .

See Solution

Problem 513

Solve for $w$ in the equation $10.27=w+3.27$ .

See Solution

Problem 514

Find the number that is $-4.7 - 3.6$ .

See Solution

Problem 515

What is the partial pressure of the remaining air if total pressure is 0.99 atm, CO₂ is 0.05 atm, and H₂S is 0.02 atm?

See Solution

Problem 516

Find the value of $\square$ in the equations: $63.85 \times \square=6,385$ , $63.85 \times \square=63,850$ , $63.85 \times \square=638,500$ .

See Solution

Problem 517

Calculate $709 \div 10^{2}$ .

See Solution

Problem 518

Find the value of $\square$ in the equations: $720,800 \div \square=7.208$ , $720,800 \div \square=72.08$ , $720,800 \div \square=720.8$ .

See Solution

Problem 519

Ashley has \$425.82. What is her balance after a deposit of \$120.75 and a withdrawal of \$185.90?

See Solution

Problem 520

Calculate the total cost for 140 items at \$3.20 each.

See Solution

Problem 521

Calculate the total cost for 140 items at \$3.20 each. Use the formula: Total Cost = 140 * \$3.20.

See Solution

Problem 522

Calculate the total cost for 1,494 items at \ $0.15 each:$ 1,494 \times 0.15$.

See Solution

Problem 523

Eddie earns \ $17.25/hour for 37 hours. Overtime is$ 1 \frac{1}{2}$ times that. Calculate his total pay for the week.

See Solution

Problem 524

What was the original price of an item if it was reduced by \$1.15 and the new price is \$33.37?

See Solution

Problem 525

Divide $3.42 \times 10^{-45}$ by $1.8 \times 10^{-46}$ and express the answer in scientific notation.

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Problem 526

For the following situation, find the average monthly expense that you would use in budgeting for the given expense. Note: Annual means once a year, and semiannual means twice a year. Lan pays a semiannual premium of $\$ 750$ for automobile insurance, a monthly premium of $\$ 140$ for health insurance, and an annual premium of $\$ 450$ for life insurance.
The average monthly expense is $\$$ $\square$ (Round to the nearest cent as needed.)

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Problem 527

Question 10 (1 point) Convert 5.10 m to mm (do not use scientific notation) record the whole value. Just record the value and not the units.
Your Answer: $\square$ Answer
Question 11 (1 point) Convert 3 hours to minutes (do not use scientific notation). Record the whole number values with no units.
Your Answer: $\square$ Answer

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Problem 528

Journalize the entries for the following transactions:
Mar. 1 Established a petty cash fund of $\$ 300$ . 31 The amount of cash in the petty cash fund is now $\$ 64$ . The fund is replenished based on the following receipts: office supplies, $\$ 137$ ; selling expenses, $\$ 112$ .
Record any discrepancy in the cash short and over account. If an amount box does not require an entry, leave it blank. Mar. 1 $\square$ $\square$ $\square$ $\qquad$ $\square$ $\square$
Mar. 31 $\square$ $\square$ $\square$ $\square$ $\square$ $\square$ $\square$ $\square$ $\square$ $\square$ $\square$ $\square$

See Solution

Problem 529

(5) Round each of these numbers to 1 decimal place. $221.18 \longrightarrow$ $\square$

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Problem 530

Complete the chart. \begin{tabular}{|c|c|} \hline Base-Ten Numeral & Number Name \\ \hline 1.893 & one and eight hundred ninety-three thousandths \\ \hline 0.600 & \\ \hline 1.503 & \\ \hline 1.013 & \\ \hline & \\ \hline 0.037 & two and two thousandths \\ \hline & \\ \hline & \\ \hline \end{tabular}

See Solution

Problem 531

Which sign makes $5 \frac{4}{5} ? 5.7$ true? Choose from $>$ or $=$ .

See Solution

Problem 532

Which symbol makes this statement true? $3.51 \, ? \, 3 \frac{29}{100}$

See Solution

Problem 533

Order these numbers from greatest to least: $5$ , $\frac{19}{20}$ , $5.75$ , $\frac{12}{16}$ , $-\frac{7}{20}$ , $5.48$ .

See Solution

Problem 534

Skriv tallene som decimaltal gange en ti'er potens: a) $5.600.000=$ b) $27.000.000=$ c) $0,000005=$ d) $0,0045=$ e) $3.000.000.000=$ f) $0,023=$

See Solution

Problem 535

Karsten vil bygge en jernbane.
1.1 Hvad koster 1 startsæt og 2 skinner?
1.2 Er lokomotivet billigere i Tyskland? (kurs: 745)
1.3 Beregn længden af modellen af et MY-lokomotiv ( $18.90 \mathrm{~m}$ , skala 1:100).

See Solution

Problem 536

Write 2.1 × 10^{5} in standard form.

See Solution

Problem 537

Round 13.406 to the nearest tenth and hundredth. Explain your reasoning for both answers.

See Solution

Problem 538

Convert $.00013$ to scientific notation.

See Solution

Problem 539

1. What digit do you check to round 74.58 to the nearest tenth? What is the rounded value?
2. George drives 40.8 miles. How many miles will he be charged for? Explain. 3-10. Round the following numbers to the underlined digit: 16.5, 56.1, 1.32, 42.78, 1.652, 582.04, \$80,547.64 \underline{5}, \$80,547.645.

See Solution

Problem 540

Round the following decimals to the nearest whole number: 4.5, 57.3, 34.731, 215.39. Also, round to the underlined digit: 7.158, 0.758, 6.4382, 84.732.

See Solution

Problem 541

What is the average length of an American alligator, 4.39 meters, rounded to the nearest tenth?

See Solution

Problem 542

Find two numbers that round to 8.21 when rounded to the nearest hundredth.

See Solution

Problem 543

Evaluate $5.6 \times \frac{2}{3}$ .

See Solution

Problem 544

Calculate $5.6 \times \frac{2}{3}$ .

See Solution

Problem 545

Rewrite 8.193 times 10 to the power of 10 in decimal form without using exponents or scientific notation.

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Problem 546

Multiply and express in scientific notation: $(3.3 \times 10^{-20}) \times (2.6 \times 10^{15})$

See Solution

Problem 547

Round 286.35 to 2 decimal places.

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Problem 548

Divide $3.525 \times 10^{10}$ by $4.7 \times 10^{-39}$ and express the result in scientific notation.

See Solution

Problem 549

Calculate $219.68 \times 99.7$ and round to the hundredths place.

See Solution

Problem 550

Divide $396.08$ by $802.001$ and round the answer to the thousandths place.

See Solution

Problem 551

Calculate and round the result of $4.967 \times 5.45 \times 7.7$ to the nearest whole number.

See Solution

Problem 552

Insert $<$ , >, or = to make the statement true: $-8.4 + -9.0 \, ? \, 0$ .

See Solution

Problem 553

Convert $8.193 \times 10^{10}$ to decimal form without using exponents or scientific notation.

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Problem 554

Convert each number to standard form:
29. 0.59
31. 0.00063
33. 74050
35. $35.8 + 0.5 + 0.071 + 0.3\%$
37. $3(0.01) + 6(0.001)$

See Solution

Problem 555

Calculate the mass: $2.09 \frac{\mathrm{g}}{\mathrm{mL}} \times 3.925 \mathrm{~mL} = \prod_{\mathrm{g}} \mathrm{g}$ .

See Solution

Problem 556

Write the standard form for these numbers: 59 hundredths, 63 hundred-thousandths, 74050, and calculate $35.8 + 0.5 + 0.07$ .

See Solution

Problem 557

Write the decimals in expanded notation: 18.025 and 130.04.

See Solution

Problem 558

Calculate the moles: $78.08 \frac{\mathrm{mol}}{\mathrm{L}} \times 33 \mathrm{L} = \square \mathrm{mol}$

See Solution

Problem 559

Calculate $938.4 \mathrm{~mol} \div 39.477 \mathrm{~L}$ to find the concentration in $\frac{\mathrm{mol}}{\mathrm{L}}$ .

See Solution

Problem 560

A car travels 2.3 hours at 65 miles/hour. How many miles do they cover? Calculate: $2.3 \mathrm{hrs} \cdot 65 \mathrm{~m/hr}=$

See Solution

Problem 561

Calculate $(5.07)(5)$ and $25.4$ with the correct significant digits.

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Problem 562

Use the property of addition to simplify and find the sum of $[5.5 + (-2.3)] + [(-5.5) + 2.3]$ .

See Solution

Problem 563

Calculate the total cost in dollars of renting a bicycle and helmet for 5 days using $13.25 \times 5 + 6.5$ .

See Solution

Problem 564

The expression $13.25 \times 5 + 6.5$ calculates the cost of renting a bike and helmet for 5 days.
a. What does $13.25$ represent? b. How would the expression change if the helmet cost were doubled?

See Solution

Problem 565

Find the mass (in mg) of 6.50 ml of isopropyl alcohol with a density of $0.7860 \mathrm{~g} / \mathrm{ml}$ .

See Solution

Problem 566

Calculate the following with correct significant figures:
1. $34.567 + 0.2$
2. $3.0 \div 2$
3. $34.2 \times 0.03$
4. $482 - 2.45$

See Solution

Problem 567

Complete the table using place-value patterns for the decimals: 0.08, 0.5, 0.2, and 0.06.

See Solution

Problem 568

Convert $6.19 \times 10^{2} \mathrm{~nm}^{3}$ to $\mathrm{mm}^{3}$ .

See Solution

Problem 569

Convert $9.17 \times 10^{2} \mathrm{~g}$ to $\mathrm{kg}$ , reporting the answer with the correct significant figures.

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Problem 570

Andy’s model is 10 times the actual tool's size. If the tool is 0.24 meters long, how long is the model?

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Problem 571

If the ice on a pond is 0.03 m thick, how thick would it be if it were 10 times thicker?

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Problem 572

The model is 10 times larger than the actual tool, which is 0.24 meters long. What is the model's size in meters?

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Problem 573

Find the height of each block if a stack of 10 blocks is 12.3 inches tall. Height of each block = $\frac{12.3}{10}$ .

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Problem 574

Calculate to the correct significant figures: $7.1092 \times \frac{(6.501-4.230)}{(893.200-892.109)}+10.238701.$

See Solution

Problem 575

A container weighs 107.34 g empty and 597.22 g full. What is its volume in ml?

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Problem 576

Convert 0.0019 to scientific notation.

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Problem 577

Find the significant figures in the measurement $6.733000$ .

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Problem 578

Find the significant figures in the measurement $0.00230$ .

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Problem 579

Calculate the value of $\frac{-4.05 \times 10^{-1}}{3.00 \times 10^{4}}$ and express it in scientific notation.

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Problem 580

Convert -0.003107 to scientific notation.

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Problem 581

Convert the temperature $T = 83.3{ }^{\circ} \mathrm{C}$ to SI units with the correct significant digits.

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Problem 582

Crane Corporation purchased from its stockholders 5,700 shares of its own previously issued stock for $\$ 279,300$ . It later resold 1,600 shares for $\$ 52$ per share, then 1,600 more shares for $\$ 47$ per share, and finally 2,500 shares for $\$ 41$ per share.
Prepare journal entries for the purchase of the treasury stock and the three sales of treasury stock. (Credit account titles are automatically indented when the amount is entered. Do not indent manually. If no entry is required, select "No Entry" for th account titles and enter 0 for the amounts. List all debit entries before credit entries.)
Account Titles and Explanation Debit Credit $\square$ $\square$ $\square$ $\square$ $\square$ $\square$ (To record purchase from stockholders.) $\square$ $\square$ $\square$ $\square$ $\square$ $\square$ $\square$ $\square$ $\square$ (To record sales of shares at $\$ 52$ per share.) $\square$ $\square$ $\square$ $\square$ $\square$ $\square$ $\square$ $\square$

See Solution

Problem 583

A rope is 73.5 m long. It is cut into 5 pieces of equal length. How long is each piece?
Give your answer in metres (m).

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Problem 584

Every mint plant for sale in a garden centre is the same price.
It costs $£ 11.90$ to buy 7 mint plants. How much would it cost to buy 28 mint plants? Give your answer in pounds $(£)$ .

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Problem 585

Bookwork code: 1G Calculator allowed
Archie is going on holiday and needs to exchange some pounds $(£)$ for euros $(€)$ . How many euros can he get for $£ 22$ ? Give your answer to 2 decimal places.
Exchange rate £1 $=$ €1.12

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Problem 586

What is $\frac{3}{100}$ written as a decimal?

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Problem 587

Jeff is buying books at a used bookstore. He wants to approximate the total cost of his purchase before checking out.
Which amount is the most reasonable approximation of the total price of the 5 books? $\$ 25.00$ $\$ 30.00$ $\$ 35.00$ $\$ 40.00$ \begin{tabular}{|c|} \hline Prices of Books \\ \hline $\$ 5.99$ \\ \hline $\$ 6.00$ \\ \hline $\$ 6.45$ \\ \hline $\$ 7.75$ \\ \hline $\$ 7.99$ \\ \hline \end{tabular}

See Solution

Problem 588

Kyle's school is 2.34 mi from his house. One day, he rode his bike 2.5 times that distance. Which choice is the closest estimate of the number of miles Kyle rode his bike? 6 4 9 3

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Problem 589

There are 87.4 calories in one serving of cherries. How many calories are in 3.85 servings?
Enter your answer in the box. $\square$ calories

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Problem 590

Compare $\sqrt{42}$ and $\sqrt{58}$ plotted on the number line. What is the approximate difference in tenths between the two values? $\sqrt{58}$ is about $\square$ greater than $\sqrt{42}$ .

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Problem 591

16. 0.5625
17. 0.90625
Convert the following fractions to decimals. Use a line over the repeating sequence.
20. $\frac{11}{9}$
21. $-\frac{4}{9}$
22. $\frac{7}{11}$
23. $\frac{7}{12}$
24. $\frac{8}{15}$

See Solution

Problem 592

6b Complete the short division to find $12.378 \div 6$

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Problem 593

Calculate the total interest for two loans of \$2,500: Loan A (3 years, 15\%, \$86.66/month) and Loan B (5 years, 10\%, \$53.12/month). Find the absolute difference, rounding to the nearest ten dollars.

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Problem 594

Compare $-1.96312 \ldots$ and $-\sqrt{5}$ . Provide your calculations and reasoning.

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Problem 595

Calculate the total payback for a \ $249,000 mortgage: 15 years at 4\% ($ 1841.82/month) and 20 years at 5\% ($1643.29/month).

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Problem 596

Calculate the product of 1.9 and 0.46: $1.9 \times 0.46$ .

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Problem 597

Jack travels 2.45 miles and Wanda travels 2.31 miles. Who travels farther?

See Solution

Problem 598

Kelly buys 3 games at \$18.95 each and 2 earbuds at \$11.50 each, with a \$2 coupon per game. Is her total \$77.85 or \$73.85?

See Solution

Problem 599

Round 180.85 to the nearest tenth: what is the result?

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Problem 600

Round 0.09541 to the nearest $0.001$ .

See Solution

1 ...3 4 5 6 7 8 9 ...17

Decimals

Problem 501

Convert 0.512 mJ0.512 \mathrm{~mJ}0.512 mJ to cJ\mathrm{cJ}cJ.

Problem 502

Calculate 14.7×11.36114.7 \times 11.36114.7×11.361 and confirm it equals 167.0067167.0067167.0067.

Problem 503

Mr. Bonilla bought 3.75 lbs of pears at \$0.92/lb and 2.1 lbs of apples at \$1.10/lb. What is his total cost?

Problem 504

Convert 6.33×10−10 g6.33 \times 10^{-10} \mathrm{~g}6.33×10−10 g of salt to milligrams.

Problem 505

Multiply: 25.04×3.005=25.04 \times 3.005=25.04×3.005=

Problem 506

Calculate 3.2−(−5.7)3.2 - (-5.7)3.2−(−5.7) and simplify the expression.

Problem 507

Calculate the product of 25.04 and 3.005. What is 25.04×3.00525.04 \times 3.00525.04×3.005?

Problem 508

Calculate the difference: 546.19−3.068546.19 - 3.068546.19−3.068. What is the result?

Problem 509

Convert 4184 \frac{1}{8}481​ to decimal and explain why Jeremy thinks it's 4.18. What is 418=4 \frac{1}{8}=481​=?

Problem 510

Convert 7587 \frac{5}{8}785​ to decimal and explain why Ariel thinks it's 7.58. What is the correct decimal? 758=7 \frac{5}{8} =785​=

Problem 511

Set up long division to find the decimal expansion of 2333\frac{23}{33}3323​. What is the result?

Problem 512

Find the decimal expansion of 2333\frac{23}{33}3323​.

Problem 513

Solve for www in the equation 10.27=w+3.2710.27=w+3.2710.27=w+3.27.

Problem 514

Find the number that is −4.7−3.6-4.7 - 3.6−4.7−3.6.

Problem 515

What is the partial pressure of the remaining air if total pressure is 0.99 atm, CO₂ is 0.05 atm, and H₂S is 0.02 atm?

Problem 516

Find the value of □\square□ in the equations: 63.85×□=6,38563.85 \times \square=6,38563.85×□=6,385, 63.85×□=63,85063.85 \times \square=63,85063.85×□=63,850, 63.85×□=638,50063.85 \times \square=638,50063.85×□=638,500.

Problem 517

Calculate 709÷102709 \div 10^{2}709÷102.

Problem 518

Find the value of □\square□ in the equations: 720,800÷□=7.208720,800 \div \square=7.208720,800÷□=7.208, 720,800÷□=72.08720,800 \div \square=72.08720,800÷□=72.08, 720,800÷□=720.8720,800 \div \square=720.8720,800÷□=720.8.

Problem 519

Ashley has \$425.82. What is her balance after a deposit of \$120.75 and a withdrawal of \$185.90?

Problem 520

Calculate the total cost for 140 items at \$3.20 each.

Problem 521

Calculate the total cost for 140 items at \$3.20 each. Use the formula: Total Cost = 140 * \$3.20.

Problem 522

Calculate the total cost for 1,494 items at \0.15each:0.15 each: 0.15each:1,494 \times 0.15$.

Problem 523

Eddie earns \17.25/hourfor37hours.Overtimeis17.25/hour for 37 hours. Overtime is 17.25/hourfor37hours.Overtimeis1 \frac{1}{2}$ times that. Calculate his total pay for the week.

Problem 524

What was the original price of an item if it was reduced by \$1.15 and the new price is \$33.37?

Problem 525

Divide 3.42×10−453.42 \times 10^{-45}3.42×10−45 by 1.8×10−461.8 \times 10^{-46}1.8×10−46 and express the answer in scientific notation.

Problem 526

Problem 527

Problem 528

Problem 529

(5) Round each of these numbers to 1 decimal place. 221.18⟶221.18 \longrightarrow221.18⟶ □\square□

Problem 530

Problem 531

Which sign makes 545?5.75 \frac{4}{5} ? 5.7554​?5.7 true? Choose from >>> or ===.

Problem 532

Which symbol makes this statement true? 3.51 ? 3291003.51 \, ? \, 3 \frac{29}{100}3.51?310029​

Problem 533

Order these numbers from greatest to least: 555, 1920\frac{19}{20}2019​, 5.755.755.75, 1216\frac{12}{16}1612​, −720-\frac{7}{20}−207​, 5.485.485.48.

Problem 534

Skriv tallene som decimaltal gange en ti'er potens: a) 5.600.000=5.600.000=5.600.000= b) 27.000.000=27.000.000=27.000.000= c) 0,000005=0,000005=0,000005= d) 0,0045=0,0045=0,0045= e) 3.000.000.000=3.000.000.000=3.000.000.000= f) 0,023=0,023=0,023=

Problem 535

Karsten vil bygge en jernbane. 1.1 Hvad koster 1 startsæt og 2 skinner? 1.2 Er lokomotivet billigere i Tyskland? (kurs: 745) 1.3 Beregn længden af modellen af et MY-lokomotiv (18.90 m18.90 \mathrm{~m}18.90 m, skala 1:100).

Problem 536

Write 2.1 × 10^{5} in standard form.

Problem 537

Round 13.406 to the nearest tenth and hundredth. Explain your reasoning for both answers.

Problem 538

Convert .00013.00013.00013 to scientific notation.

Problem 539

Problem 540

Round the following decimals to the nearest whole number: 4.5, 57.3, 34.731, 215.39. Also, round to the underlined digit: 7.158, 0.758, 6.4382, 84.732.

Problem 541

What is the average length of an American alligator, 4.39 meters, rounded to the nearest tenth?

Problem 542

Find two numbers that round to 8.21 when rounded to the nearest hundredth.

Convert $0.512 \mathrm{~mJ}$ to $\mathrm{cJ}$ .

Calculate $14.7 \times 11.361$ and confirm it equals $167.0067$ .

Convert $6.33 \times 10^{-10} \mathrm{~g}$ of salt to milligrams.

Multiply: $25.04 \times 3.005=$

Calculate $3.2 - (-5.7)$ and simplify the expression.

Calculate the product of 25.04 and 3.005. What is $25.04 \times 3.005$ ?

Calculate the difference: $546.19 - 3.068$ . What is the result?

Convert $4 \frac{1}{8}$ to decimal and explain why Jeremy thinks it's 4.18. What is $4 \frac{1}{8}=$ ?

Convert $7 \frac{5}{8}$ to decimal and explain why Ariel thinks it's 7.58. What is the correct decimal? $7 \frac{5}{8} =$

Set up long division to find the decimal expansion of $\frac{23}{33}$ . What is the result?

Find the decimal expansion of $\frac{23}{33}$ .

Solve for $w$ in the equation $10.27=w+3.27$ .

Find the number that is $-4.7 - 3.6$ .

Find the value of $\square$ in the equations: $63.85 \times \square=6,385$ , $63.85 \times \square=63,850$ , $63.85 \times \square=638,500$ .

Calculate $709 \div 10^{2}$ .

Find the value of $\square$ in the equations: $720,800 \div \square=7.208$ , $720,800 \div \square=72.08$ , $720,800 \div \square=720.8$ .

Calculate the total cost for 1,494 items at \ $0.15 each:$ 1,494 \times 0.15$.

Eddie earns \ $17.25/hour for 37 hours. Overtime is$ 1 \frac{1}{2}$ times that. Calculate his total pay for the week.

Divide $3.42 \times 10^{-45}$ by $1.8 \times 10^{-46}$ and express the answer in scientific notation.

(5) Round each of these numbers to 1 decimal place. $221.18 \longrightarrow$ $\square$

Which sign makes $5 \frac{4}{5} ? 5.7$ true? Choose from $>$ or $=$ .

Which symbol makes this statement true? $3.51 \, ? \, 3 \frac{29}{100}$

Order these numbers from greatest to least: $5$ , $\frac{19}{20}$ , $5.75$ , $\frac{12}{16}$ , $-\frac{7}{20}$ , $5.48$ .

Skriv tallene som decimaltal gange en ti'er potens: a) $5.600.000=$ b) $27.000.000=$ c) $0,000005=$ d) $0,0045=$ e) $3.000.000.000=$ f) $0,023=$

Karsten vil bygge en jernbane.
1.1 Hvad koster 1 startsæt og 2 skinner?
1.2 Er lokomotivet billigere i Tyskland? (kurs: 745)
1.3 Beregn længden af modellen af et MY-lokomotiv ( $18.90 \mathrm{~m}$ , skala 1:100).

Convert $.00013$ to scientific notation.

Evaluate $5.6 \times \frac{2}{3}$ .

Calculate $5.6 \times \frac{2}{3}$ .

Multiply and express in scientific notation: $(3.3 \times 10^{-20}) \times (2.6 \times 10^{15})$

Divide $3.525 \times 10^{10}$ by $4.7 \times 10^{-39}$ and express the result in scientific notation.

Calculate $219.68 \times 99.7$ and round to the hundredths place.

Divide $396.08$ by $802.001$ and round the answer to the thousandths place.

Calculate and round the result of $4.967 \times 5.45 \times 7.7$ to the nearest whole number.

Insert $<$ , >, or = to make the statement true: $-8.4 + -9.0 \, ? \, 0$ .

Convert $8.193 \times 10^{10}$ to decimal form without using exponents or scientific notation.

Convert each number to standard form:
29. 0.59
31. 0.00063
33. 74050
35. $35.8 + 0.5 + 0.071 + 0.3\%$
37. $3(0.01) + 6(0.001)$

Calculate the mass: $2.09 \frac{\mathrm{g}}{\mathrm{mL}} \times 3.925 \mathrm{~mL} = \prod_{\mathrm{g}} \mathrm{g}$ .

Write the standard form for these numbers: 59 hundredths, 63 hundred-thousandths, 74050, and calculate $35.8 + 0.5 + 0.07$ .

Calculate the moles: $78.08 \frac{\mathrm{mol}}{\mathrm{L}} \times 33 \mathrm{L} = \square \mathrm{mol}$

Calculate $938.4 \mathrm{~mol} \div 39.477 \mathrm{~L}$ to find the concentration in $\frac{\mathrm{mol}}{\mathrm{L}}$ .

A car travels 2.3 hours at 65 miles/hour. How many miles do they cover? Calculate: $2.3 \mathrm{hrs} \cdot 65 \mathrm{~m/hr}=$

Calculate $(5.07)(5)$ and $25.4$ with the correct significant digits.

Use the property of addition to simplify and find the sum of $[5.5 + (-2.3)] + [(-5.5) + 2.3]$ .

Calculate the total cost in dollars of renting a bicycle and helmet for 5 days using $13.25 \times 5 + 6.5$ .

The expression $13.25 \times 5 + 6.5$ calculates the cost of renting a bike and helmet for 5 days.
a. What does $13.25$ represent? b. How would the expression change if the helmet cost were doubled?

Find the mass (in mg) of 6.50 ml of isopropyl alcohol with a density of $0.7860 \mathrm{~g} / \mathrm{ml}$ .

Calculate the following with correct significant figures:
1. $34.567 + 0.2$
2. $3.0 \div 2$
3. $34.2 \times 0.03$
4. $482 - 2.45$

Convert $6.19 \times 10^{2} \mathrm{~nm}^{3}$ to $\mathrm{mm}^{3}$ .

Convert $9.17 \times 10^{2} \mathrm{~g}$ to $\mathrm{kg}$ , reporting the answer with the correct significant figures.

Find the height of each block if a stack of 10 blocks is 12.3 inches tall. Height of each block = $\frac{12.3}{10}$ .

Calculate to the correct significant figures: $7.1092 \times \frac{(6.501-4.230)}{(893.200-892.109)}+10.238701.$