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3.1: What’s My Rule?

3.1: What’s My Rule?. Mental Math. Solve the fact problems. Write your answer on your slate. 30 + 50 = 80 - 40 = 42 + 20 = 75 - 20 = 98 + 22 = 66 – 41 =. Math Message.

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3.1: What’s My Rule?

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  1. 3.1: What’s My Rule?

  2. Mental Math Solve the fact problems. Write your answer on your slate. 30 + 50 = 80 - 40 = 42 + 20 = 75 - 20 = 98 + 22 = 66 – 41 =

  3. Math Message Each person in the United States uses about 50 gallons of water per day. Use this information to complete the “What’s My Rule?” table in your notebook. 300 500 1,500 18,250 What is the rule? X 50

  4. 300 500 1,500 18,250 What do the numbers in the in (input) column represent? What do the numbers in the out (output) column represent? How are the input and output columns related?

  5. 15 250 75 20 15 565 95 321 Variations of the “What’s My Rule” Routine Multiply by 7

  6. Other variations of “What’s My Rule?” Divide by 6 7 $7.50 5 600 $41.25

  7. Math Journal page 53 Do #1-2 on your own. Do #3-6 with your math partner.

  8. Wrap it UP! • Fill in this “What’s My Rule” table Divide by 4 6 12 1

  9. Tonight’s Homework ALSO: Put initials on and cut out your x, / triangles (activity sheets 1-4 in math journal). Bring back to school tomorrow.

  10. Math Boxes

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