Math  /  Numbers & Operations

Questionc) Use the decimal approach to multiply 0.45×0.30.45 \times 0.3. 45 0.3

Studdy Solution

STEP 1

1. We are using the decimal approach to multiply two decimal numbers: 0.450.45 and 0.30.3.
2. The multiplication will be performed by treating the numbers as whole numbers, then adjusting for the decimal places.

STEP 2

1. Remove the decimals and multiply as whole numbers.
2. Count the total number of decimal places in both original numbers.
3. Place the decimal in the product.

STEP 3

Remove the decimal points and treat the numbers as whole numbers. Multiply 4545 (from 0.450.45) by 33 (from 0.30.3).
45×3=135 45 \times 3 = 135

STEP 4

Count the total number of decimal places in the original numbers. 0.450.45 has 22 decimal places, and 0.30.3 has 11 decimal place.
Total decimal places = 2+1=32 + 1 = 3.

STEP 5

Place the decimal point in the product 135135 to reflect the total number of decimal places counted in Step 2.
1350.135 135 \rightarrow 0.135
The product of 0.45×0.30.45 \times 0.3 using the decimal approach is:
0.135\boxed{0.135}

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