What is the product of 0.4 and 0.5?

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Multiple Choice

What is the product of 0.4 and 0.5?

Explanation:
When you multiply decimals, multiply them as whole numbers and then place the decimal point based on the total number of decimal digits in the factors. Here, 0.4 is 4 tenths and 0.5 is 5 tenths. Multiply the whole numbers: 4 × 5 = 20. Each factor has one digit after the decimal, so there are 2 digits after the decimal in the product. Put the decimal two places from the right in 20 to get 0.20, which is the same as 0.2. So the product is 0.2.

When you multiply decimals, multiply them as whole numbers and then place the decimal point based on the total number of decimal digits in the factors. Here, 0.4 is 4 tenths and 0.5 is 5 tenths. Multiply the whole numbers: 4 × 5 = 20. Each factor has one digit after the decimal, so there are 2 digits after the decimal in the product. Put the decimal two places from the right in 20 to get 0.20, which is the same as 0.2. So the product is 0.2.

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