What is the product of 3.2 and 4.5?

Study for the TABE Math Test. Practice with flashcards and multiple-choice questions, each question offers hints and explanations. Get ready for your exam!

Multiple Choice

What is the product of 3.2 and 4.5?

Explanation:
When multiplying decimals, multiply as if the numbers were whole, then place the decimal point using the total number of decimal places from both factors. Treat 3.2 and 4.5 as 32 and 45, multiply: 32 × 45 = 1440. Each number has one decimal place, so there are two decimal places in the product. Put the decimal two places from the right in 1440 to get 14.40, which is 14.4. You can also check with a quick split: 3.2 × 4.5 = (3 × 4.5) + (0.2 × 4.5) = 13.5 + 0.9 = 14.4. So the product is 14.4.

When multiplying decimals, multiply as if the numbers were whole, then place the decimal point using the total number of decimal places from both factors.

Treat 3.2 and 4.5 as 32 and 45, multiply: 32 × 45 = 1440. Each number has one decimal place, so there are two decimal places in the product. Put the decimal two places from the right in 1440 to get 14.40, which is 14.4.

You can also check with a quick split: 3.2 × 4.5 = (3 × 4.5) + (0.2 × 4.5) = 13.5 + 0.9 = 14.4. So the product is 14.4.

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