Numbers & Operations

Problem 5401

What percentage of 35 newborns were boys if 27 were boys? Round to two significant figures and include units.

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Problem 5402

An alloy has $64 \mathrm{~g}$ gold and $34 \mathrm{~g}$ zinc. What is the zinc percentage? Round to two significant figures.

See Solution

Problem 5403

How many snow cones can Jayden make with 5 pounds of ice if 0.5 pound makes 3 snow cones?

See Solution

Problem 5404

What percentage of a collection with 12 pennies, 17 dimes, and 8 quarters are pennies? Round to two significant figures.

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Problem 5405

What percentage of a coin collection (12 pennies, 17 dimes, 8 quarters) is made up of pennies? Round to two significant figures.

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Problem 5406

Calculate 7! / 15! and select the correct answer: a. 3.85, b. 0.000000000384, c. 384000000000, d. 0.00000000384.

See Solution

Problem 5407

Veronica needs to find the number of certified nursing staff available for the neonatal unit. Total staff: 250. $36\%$ unavailable. Of the available, $20\%$ are certified. How many are certified and available? Select one: a. 18 b. 32 c. 90 d. 13

See Solution

Problem 5408

Calculate $\left(\frac{5}{6}\right)^{2} \div\left(\frac{5}{8}-\frac{4}{9}\right)$ .

See Solution

Problem 5409

A bag has 15 orange, 11 yellow, and 19 black gumdrops. Find the percentage of yellow and black gumdrops.

See Solution

Problem 5410

Calculate the expression: $\frac{18}{5-2}-5$ .

See Solution

Problem 5411

Which sign makes this true? $\frac{31}{64} \_ 3 \frac{9}{64}$

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Problem 5412

Calculate the expression: $8 - 4 + 2 + 5$ .

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Problem 5413

Calculate: $\frac{15+3}{9} \cdot 7$

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Problem 5414

What is the concentration of a solution made by dissolving $180.0 \mathrm{~g}$ of aluminum hydroxide in $1.50 \mathrm{~L}$ of water?

See Solution

Problem 5415

Classify the numbers $3$ , $-6$ , and $3 + -6$ as rational or irrational.

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Problem 5416

Calculate $(9+7)-(7-2)$ .

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Problem 5417

Classify the numbers -2, 1, and -2 + 1 as either rational or irrational.

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Problem 5418

Classify the numbers $2$ , $4$ , and $2 \times 4$ as rational or irrational.

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Problem 5419

Which sign makes $\frac{43}{51} ? \frac{47}{51}$ true?

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Problem 5420

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

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Problem 5421

What sign makes this true? $-2 \frac{57}{64} ?-2$

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Problem 5422

Which sign makes $\frac{25}{47} ? \frac{40}{47}$ true?

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Problem 5423

Calculate $3 \cdot \frac{10}{2+8} \cdot 9$ .

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Problem 5424

Which sign makes this true: $\frac{-3}{5} ? \frac{-7}{10}$ ?

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Problem 5425

Which sign makes this true? $\frac{81}{16} ? 5 \frac{1}{16}$

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Problem 5426

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

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Problem 5427

Adrian decorates 16 cupcakes in 28 minutes. How long for 56 cupcakes at the same rate?

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Problem 5428

The restaurant has 175 normal chairs and 20 baby chairs. Find the total number of chairs: $175 + 20$ .

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Problem 5429

The restaurant has 175 normal chairs and 20 for babies. What is the total number of chairs?

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Problem 5430

Sort these numbers from smallest to largest: $15$ , $\frac{10}{32}$ , $15.2875$ , $-15$ , $-0.0625$ .

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Problem 5431

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

See Solution

Problem 5432

How many quarts of butter weigh 200 pounds if 1 quart is 32 ounces?

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Problem 5433

Calculate the simple interest on \$400 at a rate of 2\% over 3 years.

See Solution

Problem 5434

A bag has 17 orange, 11 yellow, and 17 black gumdrops. Find the percentages of yellow and black gumdrops to two significant figures.

See Solution

Problem 5435

What distance (in feet) do you travel at $65 \mathrm{mi/h}$ if you look away for a moment?

See Solution

Problem 5436

Estimate $\sqrt{78}$ using nearby perfect squares.

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Problem 5437

Approximate $\sqrt{37}$ using perfect squares, referencing $\sqrt{36}=6$ and $\sqrt{49}=7$ .

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Problem 5438

Identify the option that is not a rational number: $0.\overline{65}$ , $\sqrt{2.739}$ , 6.775, $\sqrt{0.0625}$ .

See Solution

Problem 5439

Find the probability of rolling a number $\geq 5$ on a six-sided die. Express your answer as a fraction.

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Problem 5440

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 5441

Calculate the sum $-\frac{5}{9}+\frac{2}{9}$ by hand and verify with a calculator. Answer: $-\frac{5}{9}+\frac{2}{9}=\square$ .

See Solution

Problem 5442

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 5443

A student has a balance of -3450. After sending a check for \$2138 and making purchases of \$638 and \$9, what is the new balance?

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Problem 5444

Beregn det oprindelige beløb for forskellige dele og procenter. Eksempler: a) $89$ , $30\%$ ; e) $142$ , $42\%$ ; osv.

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Problem 5445

Bibi har 93 kr, som er $5 \%$ af det beløb, hun havde før shoppeturen. Find det oprindelige beløb.

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Problem 5446

Otto har 53 soldater, der er $5\%$ af den oprindelige styrke. Hvor mange soldater havde han før slaget?

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Problem 5447

Jens har 18 piratos, som er $36 \%$ af hans oprindelige beholdning. Hvor mange piratos er spist til fødselsdagen?

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Problem 5448

Beregn det oprindelige beløb for de angivne dele og procenter. Afrund til 2 decimaler.

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Problem 5449

Løs opgaverne og afrund til 1 decimal: a) $46\%$ af $68$ kr, f) $43\%$ af $489$ kr, b) $72\%$ af $87$ kr, c) $4\%$ af $304$ kr, d) $59\%$ af $856$ kr, e) $21\%$ af $293$ kr.

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Problem 5450

Find the prime factorization of 72.

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Problem 5451

Write 2.1 × 10^{5} in standard form.

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Problem 5452

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

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Problem 5453

Convert $.00013$ to scientific notation.

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Problem 5454

Opgave 28: Find hele beløb ved at bruge procent og afrund til 1 decimal. a) $13\%$ af beløb er $24\mathrm{kr}$ . b) $22\%$ af beløb er $32\mathrm{kr}$ . c) $7\%$ af beløb er $190\mathrm{kr}$ . d) $29\%$ af beløb er $139\mathrm{kr}$ .

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Problem 5455

Convert 4810000 into scientific notation.

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Problem 5456

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.

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Problem 5457

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.

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Problem 5458

Beregn vækst $\%$ for følgende: a) stigning $=98$ , startværdi $=343$ b) stigning $=32$ , startværdi $=179$ c) stigning $=49$ , startværdi $=162$ d) stigning $=9$ , startværdi $=178$ e) slutværdi $=709$ , startværdi $=689$ f) slutværdi $=617$ , startværdi $=427$ g) slutværdi $=902$ , startværdi $=716$ h) slutværdi $=496$ , startværdi $=325$

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Problem 5459

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

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Problem 5460

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

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Problem 5461

Calculate the value of $-2-(4 * 3)$ .

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Problem 5462

Beregn stigning og slutværdi for følgende: a) 94% vækst, start 521; e) 55% vækst, start 621; b) 26% vækst, start 420; f) 7% vækst, start 355; c) 30% vækst, start 844; g) 66% vækst, start 123; d) 84% vækst, start 109; h) 27% vækst, start 349.

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Problem 5463

Find the thickness of each penny if 12 pennies stack to 18.24 mm. Also, calculate the height of 20 pennies.

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Problem 5464

A stack of 12 pennies is 18.24 mm high. Find the thickness of one penny and the height of a stack of 20 pennies.

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Problem 5465

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

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Problem 5466

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

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Problem 5467

Calculate $6 \times \frac{2}{3}$ .

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Problem 5468

Write an expression for: 48 divided by 4, then subtract 9 from the result.

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Problem 5469

Evaluate $\sqrt[3]{-125}$ without a calculator. If not real, enter DNE. What is the value?

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Problem 5470

Find the value of $100 - [5 \times (3 + 4)]$ . What is the result?

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Problem 5471

Find the value of the expression $5 \times(12-6) \div 2$ . Options: a) 15 b) 27 c) 45 d) 57

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Problem 5472

Which expression is a possible first step to find the sum of $\frac{3}{8}$ and $\frac{5}{3}$ ? a) $\frac{3+5}{8+3}$ b) $\frac{9+40}{24+24}$ c) $\frac{6+13}{11}$ d) $\frac{9+40}{24}$

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Problem 5473

Identify the sets that contain the number $0.2424$ : natural numbers, rational numbers, whole numbers, irrational numbers, integers, real numbers.

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Problem 5474

Which sums can use 30 as a common denominator? Choose 3: a) $\frac{1}{3}+\frac{4}{15}$ , b) $\frac{4}{9}+\frac{1}{15}$ , c) $\frac{7}{18}+\frac{1}{30}$ , d) $\frac{1}{6}+\frac{7}{30}$ , e) $\frac{8}{15}+\frac{3}{20}$ , f) $\frac{2}{5}+\frac{5}{6}$ .

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Problem 5475

Part A: Write 670,503 in expanded form. Part B: Explain how to express 8,523 using 15 hundreds in expanded form.

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Problem 5476

Simplify the expression using order of operations: $2[5+4(7 \cdot 4-24)]=$

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Problem 5477

Write 8,523 in expanded form using 15 hundreds. Show your work or explanation.

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Problem 5478

Find the next number in the sequence: $2, 6, 10, 14$ . Choices: a. 16, b. 17, c. 18, d. 20.

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Problem 5479

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

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Problem 5480

Rewrite 883,600,000 in scientific notation.

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Problem 5481

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

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Problem 5482

Round 286.35 to 2 decimal places.

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Problem 5483

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

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Problem 5484

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

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Problem 5485

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

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Problem 5486

How many picoseconds are in 11 minutes? Provide your answer in scientific notation, e.g., $2.3 * 10^{\wedge} 5$ .

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Problem 5487

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

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Problem 5488

Calculate $31 / 4 + 21 / 3$ . Choose the correct answer: a. $51 / 12$ , b. $57 / 12$ , c. $72 / 7$ , d. $121 / 5$ .

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Problem 5489

J'Neice's phone bill is \$79 monthly with 1000 texts included. She sent 2100 texts. What is her total bill?

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Problem 5490

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

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Problem 5491

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

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Problem 5492

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 5493

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

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Problem 5494

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

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Problem 5495

Write the decimals in expanded notation: 18.025 and 130.04.

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Problem 5496

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

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Problem 5497

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

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Problem 5498

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

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Problem 5499

James throws a 90 mph fastball. If it takes 1.8 seconds to reach home plate, find the distance to the mound in meters.

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Problem 5500

Ed runs 3.2 miles in 18 minutes. What is his speed in meters per second? Use $1 \text{ mile} = 1609.34 \text{ meters}$ .

See Solution

1 ...52 53 54 55 56 57 58 ...69

Numbers & Operations

Problem 5401

What percentage of 35 newborns were boys if 27 were boys? Round to two significant figures and include units.

Problem 5402

An alloy has 64 g64 \mathrm{~g}64 g gold and 34 g34 \mathrm{~g}34 g zinc. What is the zinc percentage? Round to two significant figures.

Problem 5403

How many snow cones can Jayden make with 5 pounds of ice if 0.5 pound makes 3 snow cones?

Problem 5404

What percentage of a collection with 12 pennies, 17 dimes, and 8 quarters are pennies? Round to two significant figures.

Problem 5405

What percentage of a coin collection (12 pennies, 17 dimes, 8 quarters) is made up of pennies? Round to two significant figures.

Problem 5406

Calculate 7! / 15! and select the correct answer: a. 3.85, b. 0.000000000384, c. 384000000000, d. 0.00000000384.

Problem 5407

Veronica needs to find the number of certified nursing staff available for the neonatal unit. Total staff: 250. 36%36\%36% unavailable. Of the available, 20%20\%20% are certified. How many are certified and available? Select one: a. 18 b. 32 c. 90 d. 13

Problem 5408

Calculate (56)2÷(58−49)\left(\frac{5}{6}\right)^{2} \div\left(\frac{5}{8}-\frac{4}{9}\right)(65​)2÷(85​−94​).

Problem 5409

A bag has 15 orange, 11 yellow, and 19 black gumdrops. Find the percentage of yellow and black gumdrops.

Problem 5410

Calculate the expression: 185−2−5\frac{18}{5-2}-55−218​−5.

Problem 5411

Which sign makes this true? 3164_3964 \frac{31}{64} \_ 3 \frac{9}{64} 6431​_3649​

Problem 5412

Calculate the expression: 8−4+2+58 - 4 + 2 + 58−4+2+5.

Problem 5413

Calculate: 15+39⋅7\frac{15+3}{9} \cdot 7915+3​⋅7

Problem 5414

What is the concentration of a solution made by dissolving 180.0 g180.0 \mathrm{~g}180.0 g of aluminum hydroxide in 1.50 L1.50 \mathrm{~L}1.50 L of water?

Problem 5415

Classify the numbers 333, −6-6−6, and 3+−63 + -63+−6 as rational or irrational.

Problem 5416

Calculate (9+7)−(7−2)(9+7)-(7-2)(9+7)−(7−2).

Problem 5417

Classify the numbers -2, 1, and -2 + 1 as either rational or irrational.

Problem 5418

Classify the numbers 222, 444, and 2×42 \times 42×4 as rational or irrational.

Problem 5419

Which sign makes 4351?4751\frac{43}{51} ? \frac{47}{51}5143​?5147​ true?

Problem 5420

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

Problem 5421

What sign makes this true? −25764?−2 -2 \frac{57}{64} ?-2 −26457​?−2

Problem 5422

Which sign makes 2547?4047\frac{25}{47} ? \frac{40}{47}4725​?4740​ true?

Problem 5423

Calculate 3⋅102+8⋅93 \cdot \frac{10}{2+8} \cdot 93⋅2+810​⋅9.

Problem 5424

Which sign makes this true: −35?−710 \frac{-3}{5} ? \frac{-7}{10} 5−3​?10−7​?

Problem 5425

Which sign makes this true? 8116?5116 \frac{81}{16} ? 5 \frac{1}{16} 1681​?5161​

Problem 5426

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

Problem 5427

Adrian decorates 16 cupcakes in 28 minutes. How long for 56 cupcakes at the same rate?

Problem 5428

The restaurant has 175 normal chairs and 20 baby chairs. Find the total number of chairs: 175+20175 + 20175+20.

Problem 5429

The restaurant has 175 normal chairs and 20 for babies. What is the total number of chairs?

Problem 5430

Sort these numbers from smallest to largest: 151515, 1032\frac{10}{32}3210​, 15.287515.287515.2875, −15-15−15, −0.0625-0.0625−0.0625.

Problem 5431

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 5432

How many quarts of butter weigh 200 pounds if 1 quart is 32 ounces?

Problem 5433

Calculate the simple interest on \$400 at a rate of 2\% over 3 years.

Problem 5434

A bag has 17 orange, 11 yellow, and 17 black gumdrops. Find the percentages of yellow and black gumdrops to two significant figures.

Problem 5435

What distance (in feet) do you travel at 65mi/h65 \mathrm{mi/h}65mi/h if you look away for a moment?

Problem 5436

Estimate 78\sqrt{78}78​ using nearby perfect squares.

Problem 5437

Approximate 37\sqrt{37}37​ using perfect squares, referencing 36=6\sqrt{36}=636​=6 and 49=7\sqrt{49}=749​=7.

Problem 5438

Identify the option that is not a rational number: 0.65‾0.\overline{65}0.65, 2.739\sqrt{2.739}2.739​, 6.775, 0.0625\sqrt{0.0625}0.0625​.

Problem 5439

Find the probability of rolling a number ≥5\geq 5≥5 on a six-sided die. Express your answer as a fraction.

Problem 5440

An alloy has $64 \mathrm{~g}$ gold and $34 \mathrm{~g}$ zinc. What is the zinc percentage? Round to two significant figures.

Veronica needs to find the number of certified nursing staff available for the neonatal unit. Total staff: 250. $36\%$ unavailable. Of the available, $20\%$ are certified. How many are certified and available? Select one: a. 18 b. 32 c. 90 d. 13

Calculate $\left(\frac{5}{6}\right)^{2} \div\left(\frac{5}{8}-\frac{4}{9}\right)$ .

Calculate the expression: $\frac{18}{5-2}-5$ .

Which sign makes this true? $\frac{31}{64} \_ 3 \frac{9}{64}$

Calculate the expression: $8 - 4 + 2 + 5$ .

Calculate: $\frac{15+3}{9} \cdot 7$

What is the concentration of a solution made by dissolving $180.0 \mathrm{~g}$ of aluminum hydroxide in $1.50 \mathrm{~L}$ of water?

Classify the numbers $3$ , $-6$ , and $3 + -6$ as rational or irrational.

Calculate $(9+7)-(7-2)$ .

Classify the numbers $2$ , $4$ , and $2 \times 4$ as rational or irrational.

Which sign makes $\frac{43}{51} ? \frac{47}{51}$ true?

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

What sign makes this true? $-2 \frac{57}{64} ?-2$

Which sign makes $\frac{25}{47} ? \frac{40}{47}$ true?

Calculate $3 \cdot \frac{10}{2+8} \cdot 9$ .

Which sign makes this true: $\frac{-3}{5} ? \frac{-7}{10}$ ?

Which sign makes this true? $\frac{81}{16} ? 5 \frac{1}{16}$

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

The restaurant has 175 normal chairs and 20 baby chairs. Find the total number of chairs: $175 + 20$ .

Sort these numbers from smallest to largest: $15$ , $\frac{10}{32}$ , $15.2875$ , $-15$ , $-0.0625$ .

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

What distance (in feet) do you travel at $65 \mathrm{mi/h}$ if you look away for a moment?

Estimate $\sqrt{78}$ using nearby perfect squares.

Approximate $\sqrt{37}$ using perfect squares, referencing $\sqrt{36}=6$ and $\sqrt{49}=7$ .

Identify the option that is not a rational number: $0.\overline{65}$ , $\sqrt{2.739}$ , 6.775, $\sqrt{0.0625}$ .

Find the probability of rolling a number $\geq 5$ on a six-sided die. Express your answer as a fraction.

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) $0,023=$

Calculate the sum $-\frac{5}{9}+\frac{2}{9}$ by hand and verify with a calculator. Answer: $-\frac{5}{9}+\frac{2}{9}=\square$ .

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).

Beregn det oprindelige beløb for forskellige dele og procenter. Eksempler: a) $89$ , $30\%$ ; e) $142$ , $42\%$ ; osv.

Bibi har 93 kr, som er $5 \%$ af det beløb, hun havde før shoppeturen. Find det oprindelige beløb.

Otto har 53 soldater, der er $5\%$ af den oprindelige styrke. Hvor mange soldater havde han før slaget?

Jens har 18 piratos, som er $36 \%$ af hans oprindelige beholdning. Hvor mange piratos er spist til fødselsdagen?

Løs opgaverne og afrund til 1 decimal: a) $46\%$ af $68$ kr, f) $43\%$ af $489$ kr, b) $72\%$ af $87$ kr, c) $4\%$ af $304$ kr, d) $59\%$ af $856$ kr, e) $21\%$ af $293$ kr.

Convert $.00013$ to scientific notation.

Opgave 28: Find hele beløb ved at bruge procent og afrund til 1 decimal. a) $13\%$ af beløb er $24\mathrm{kr}$ . b) $22\%$ af beløb er $32\mathrm{kr}$ . c) $7\%$ af beløb er $190\mathrm{kr}$ . d) $29\%$ af beløb er $139\mathrm{kr}$ .

Calculate the value of $-2-(4 * 3)$ .

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

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

Calculate $6 \times \frac{2}{3}$ .

Evaluate $\sqrt[3]{-125}$ without a calculator. If not real, enter DNE. What is the value?

Find the value of $100 - [5 \times (3 + 4)]$ . What is the result?

Find the value of the expression $5 \times(12-6) \div 2$ . Options: a) 15 b) 27 c) 45 d) 57

Which expression is a possible first step to find the sum of $\frac{3}{8}$ and $\frac{5}{3}$ ? a) $\frac{3+5}{8+3}$ b) $\frac{9+40}{24+24}$ c) $\frac{6+13}{11}$ d) $\frac{9+40}{24}$

Identify the sets that contain the number $0.2424$ : natural numbers, rational numbers, whole numbers, irrational numbers, integers, real numbers.