What is 0.4 x 8?

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Study for the 7th Grade Math Test. Explore interactive quizzes featuring multiple-choice questions, detailed hints, and explanations to enhance understanding. Boost your math skills and get ready for your exam efficiently!

Multiple Choice

What is 0.4 x 8?

Explanation:
Multiplying a decimal by a whole number uses the decimal’s place value. 0.4 is four tenths. Eight copies of four tenths add up to 32 tenths, which is the same as 3.2. A quick way to see it is to multiply the digits as 4 × 8 = 32, then place the decimal so there is one digit after the decimal (because 0.4 has one decimal place), giving 3.2. The exact product here is 3.2.

Multiplying a decimal by a whole number uses the decimal’s place value. 0.4 is four tenths. Eight copies of four tenths add up to 32 tenths, which is the same as 3.2. A quick way to see it is to multiply the digits as 4 × 8 = 32, then place the decimal so there is one digit after the decimal (because 0.4 has one decimal place), giving 3.2. The exact product here is 3.2.

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