Temperature: Negative Number Operations

Today we're tackling negative number operations. Ask your child to explain the first step out loud before writing. Slow thinking now means fewer mistakes later. Encourage neat, line-by-line work. If they get stuck, ask, 'What operation is happening to the variable?' and let them lead.

• pencil
• paper
• scratch paper

Solve: 12 × 11. Then check by adding (12 × 10) + 12. Same answer? Good — you used a strategy.

1. 1

   20 + 19 = ___

   Parent tip: Walk through this step-by-step with your child. Say each step out loud.
2. 2

   4 + 9 = ___

   Parent tip: Walk through this step-by-step with your child. Say each step out loud.

1. 1

   10 + 19 = ___
2. 2

   6 + 15 = ___
3. 3

   10 + 5 = ___
4. 4

   12 + 10 = ___
5. 5

   9 + 20 = ___
6. 6

   15 + 18 = ___
7. 7

   7 + 10 = ___
8. 8

   12 + 8 = ___
9. 9

   12 + 11 = ___
10. 10

    3 + 18 = ___

Which problem made you think the hardest today? Why?