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Designate the Decimal

Your child knows how to multiply three numbers to get a product, but what if two of those numbers are decimals?

What You Need:

  • Calculator
  • Pencil and paper

What You and Your Child Will Do:

After you present each one of the following problems, let your child use either a calculator or paper and a pencil to solve them.

  1. I am thinking of three numbers with a product of 45.
    Two of the numbers are 4 and 1.5.
    The other number is a decimal.
    Designate the other decimal.
    Answer: 7.5
  2. I am thinking of three numbers with a product of 12.5.
    Two of the numbers are 2 and 2.5.
    The other number is a decimal.
    Designate the other decimal.
    Answer: 2.5
  3. I am thinking of three numbers with a product of 90.
    Two of the numbers are 2.5 and 2.5.
    The other number is a decimal.
    Designate the other decimal.
    Answer: 14.4