Step 1: Round each factor to the nearest whole number.

4.20 rounds down to 4 because 0.20 is less than 0.5.
8.61 rounds up to 9 because 0.61 is more than 0.5.

Step 2: Multiply the rounded numbers.

4 (rounded from 4.20) times 9 (rounded from 8.61) equals 36.

So, the estimated product of 4.20 and 8.61, when rounded to the nearest whole number, is 36.

Question

Step 1: Round each factor to the nearest whole number.

4.20 rounds down to 4 because 0.20 is less than 0.5.
8.61 rounds up to 9 because 0.61 is more than 0.5.

Step 2: Multiply the rounded numbers.

4 (rounded from 4.20) times 9 (rounded from 8.61) equals 36.

So, the estimated product of 4.20 and 8.61, when rounded to the nearest whole number, is 36.

Knowee AI · Accepted Answer

Step 1: Round each factor to the nearest whole number.

4.20 rounds down to 4 because 0.20 is less than 0.5.
8.61 rounds up to 9 because 0.61 is more than 0.5.

Step 2: Multiply the rounded numbers.

4 (rounded from 4.20) times 9 (rounded from 8.61) equals 36.

So, the estimated product of 4.20 and 8.61, when rounded to the nearest whole number, is 36.

Estimate the product. Round each factor to the nearest whole number, and then multiply.4.20 × 8.61