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Multiplying Decimals | Math with Mr. J

From Math with Mr. J

Multiplying Decimals | Math with Mr. J
12 min5th6thMath
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Summary

How to multiply and divide decimals -- multiplying as usual then placing the decimal point, or moving the point to divide. Mr. J counts decimal places carefully.

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All ages

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Teaching resources

Discussion questions

When multiplying decimals, count the total decimal places to place the point in the answer.

  1. How do you know where the decimal point goes in a product?
  2. How does dividing by a decimal change the problem?
  3. Why is estimating a good check?

Quick work-a-long

Words to know: decimal places, product, quotient

  • Solve 1.2 x 0.4.
  • Solve 6.5 divided by 0.5.
Multiplying Decimals | Math with Mr. J — TV on a Rolling Cart