Writing Rules

Look at the numbers. Write the rule describing each pattern. 1) 12, 15, 18, 21, 24, 27, 30, 33

• Start at 12. Add 3 each time.

• Start at 12. Add 2 each time.

• Start at 15. Add 3 each time.

• Start at 12. Add 5 each time.

Look at the numbers. Write the rule describing each pattern.

• Start at 45. Subtract 5 each time.

• Start at 45. Add 5 each time.

• Start at 40. Subtract 5 each time.

• Start at 50. Subtract 10 each time.

Look at the numbers. Write the rule describing each pattern. 3) 6, 8, 10, 12, 14, 16, 18, 20

• Start at 6. Add 2 each time.

• Start at 8. Add 2 each time.

• Start at 6. Add 4 each time.

• Start at 8. Add 4 each time.

Look at the numbers. Write the rule describing each pattern. 4) 20, 30, 40, 50, 60, 70, 80, 90

• Start at 20. Add 10 each time.

• Start at 10. Add 20 each time.

• Start at 20. Add 5 each time.

• Start at 30. Add 10 each time.

Look at the numbers. Write the rule describing each pattern. 5) 56, 49, 42, 35, 28, 21, 14, 7

• Start at 56. Subtract 7 each time.

• Start at 56. Add 7 each time.

• Start at 56. Subtract 6 each time.

• Start at 56. Add 6 each time.

Look at the numbers. Write the rule describing each pattern.

• Start at 11. Add 11 each time.

• Start at 10. Add 10 each time.

• Start at 12. Add 12 each time.

• Start at 11. Add 10 each time.

Look at the numbers. Write the rule describing each pattern.

• Start at 81. Subtract 9 each time.

• Start at 81. Add 9 each time.

• Start at 81. Subtract 8 each time.

• Start at 81. Add 8 each time.

Look at the numbers. Write the rule describing each pattern.

• Start at 15. Add 4 each time.

• Start at 10. Add 5 each time.

• Start at 20. Subtract 2 each time.

• Start at 12. Add 3 each time.

Look at the numbers. Write the rule describing each pattern.

• Start at 65. Subtract 3 each time.

• Start at 65. Add 3 each time.

• Start at 65. Subtract 5 each time.

• Start at 65. Add 5 each time.

Look at the numbers. Write the rule describing each pattern. 1) 12, 15, 18, 21, 24, 27, 30, 33 Write the rule: ____________

• Start at 12. Add 3 each time.

• Start at 12. Add 2 each time.

• Start at 15. Add 3 each time.

• Start at 12. Add 5 each time.