CheerMath

Grade 7 Decimals Practice

Multiply and Divide Decimals

Multiply and divide decimals by decimals. Shift by powers of 10 and by 0.1, predict how many decimal places an answer has, and work backwards to find missing factors.

Also known as Class 7 maths — the same topics, whether your school calls it grade, class or year.

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Sample questions

A few samples from this topic — try one, then show the answer.

  1. Multiply Tenths by Tenths

    What is the result of 0.8  ×  \; \times \;0.7?
    • 5.6
    • 0.056
    • 0.56
    • 56
    Show answer
    Answer:
    0.56

  2. Divide Decimals by Larger Whole Numbers

    Divide 4.5 by 5. What do you get?
    • 9
    • 0.09
    • 90
    • 0.9
    Show answer
    Answer:
    0.9

  3. Divide Whole Numbers by Tenths

    What is the result of 4  ÷  \; \div \;0.5?
    Show answer
    Answer:
    8

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A worked example

What is the result of 0.8  ×  \; \times \;0.7?
  1. We need to find 0.8  ×  \; \times \;0.7. Multiply the digits as whole numbers, then count decimal places to place the decimal point.
  2. Multiply digits as whole numbers: 8  ×  \; \times \;7  =  \; = \;56. The wrong options have the same digits but the decimal point in a different position.
  3. Count decimal places: 0.8 has 1, 0.7 has 1. Total = 2. The product needs exactly 2 decimal places.
  4. Place the decimal point in 56 to get 2 decimal places → 0.56

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