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. In (days) Out (gallons) 150 6 10 30 365 300 500 1,500 18,250 What is the rule? X 50

4. In (days) Out (gallons) 150 6 10 30 365 300 500 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. InOut 30 90 65 110 Rule Subtract 15 InOut 350 120 665 421 Rule Add 100 Variations of the “What’s My Rule” Routine 15 75 15 95 250 20 565 321 InOut 749 214 963 6004,200 Rule _________ Multiply by 7

6. Other variations of “What’s My Rule?” InOut 549 42 244 100 Rule PoundsCost 1$3.75 2 $18.75 11 Rule A pound of nuts cost $3.75 7 600 Divide by 6 $7.50 $41.25 5

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 InOut 10025 164 24 3 4 Rule 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