The Math Meridian
Back to Grade 5

Multiply a decimal by a whole number

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Learn it Multiply as if there were no decimal point. Then count the decimal places in the decimal and put the same number in the answer.

Example: $4.36 \times 7$

  1. Ignore the point: $436 \times 7 = 3{,}052$.
  2. 4.36 has 2 decimal places.
  3. Put 2 decimal places in the answer: 30.52. (Estimate: $4 \times 7 = 28$ ✓.)

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