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by Raymond Blum
Topics: Fourth Grade, Math

The calculator that your child owns is a remarkable little machine. You've always known that it can perform mathematical calculations faster and with more accuracy than most humans, but did you know that it can also talk? Yes, it's true! Your child's calculator will spell things out if she pushes the right buttons. For a beginning calculator user, this fun exercise will take the mystery away from the machine, and familiarize your child with the many functions of the mighty calculator!

Use the calculator alphabet below to help find the answers to the following math riddles:

 

The Calculator Alphabet:

Upside-down numbers: 0 1 2 3 4 5 6 7 8 9

                     Letters: O I Z E h S g L B G

 

Calculator Riddles:

  1. What is the only thing that gets larger the more you take away?

    25,000 – 68 – 952 – 8,956 – 11,320 =

  2. Picture these U.S. Coins: a nickle, a penny, and a dime. OK? Ellie's parents have 3 children. One is Nick and another is Penny. Who is the third?.05 ÷ .01 ÷ .10 × 3 × 211 + 123 =

  3. Bill subtracted numbers for 20 minutes, Bess multiplied them, and Leslie added them.

    • Who was more exhausted when they finished?9 + 57 + 868 + 7920 + 93,208 + 215,475 =

    • Who went into debt when they were finished?17,865 – 9,438 – 607 – 95 – 7 =

    • Who got the most work done in 20 minutes?.3 × 2 × 2.6 × 20 × 7.1 × 25 =

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