Collaborative Addition & Subtraction

Name:

Date (DD/MM/YYYY):

📚 Part 1: Quick Check - WALT & Success Criteria

WALT: We are learning to use addition and subtraction facts within 20 (tāpiritanga & tangohanga).

Success Criteria: I can recall facts within 20, use correct words, and show my thinking with counters or a 10-frame.

1. What is 17 + 3?

2. If you have 12 counters and add 5, how many counters now?

3. Which equals 20 − 4?

4. Check all that are addition (tāpiritanga):

7 + 8 = 15

15 − 7 = 8

9 + 6 = 15

20 − 5 = 15

5. On a 10-frame there are 7 counters. How many more to make 10?

WALT: We are learning to show addition and subtraction within 20 using counters and number lines.

Success Criteria: In my group I can make a model, write a number sentence, and explain my thinking using Māori or English words.

6. Use counters with your group to show 17 + 3 = 20. Draw a 10-frame model or sketch the counters below.

Number sentence: ____________

7. There were 20 apples and 6 were eaten. Write a subtraction sentence and show your working.

Subtraction sentence: ____________

Working: ____________

8. Start at 13 on a number line. Jump forward 4. What number do you land on? Draw the jumps.

9. Reflection (one sentence): How did your group work together to solve a tricky question? Use a Māori word if you can (tāpiritanga or tangohanga).