Adding to Twenty Worksheet

Name:

Date:

WALT: We Are Learning To add numbers to make 20

Success Criteria: I can:
• find the missing addend to make 20
• add two numbers to make 20
• show my working using drawings or number facts

Differentiation: Provide number lines or ten-frames for learners who need support. Give counters for hands-on practise. Challenge learners who finish quickly with larger addend pairs or three-term addition.

📚 Part 1: Quick Questions

1. What number makes 7 + ___ = 20?

2. What is 9 + 8?

3. What is 14 + 6?

4. Fill the blank: ___ + 5 = 20

✏️ Part 2: Short Answers and Activities

5. Complete: 11 + ____ = 20

6. Write three different pairs of numbers that add to 20. Show your working.

7. Match each number on the left to the correct addend on the right so the total is 20:

A. 12

B. 4

C. 19

D. 7

E. 15

1. 8

2. 16

3. 1

4. 13

5. 5

8. Word problem: Sarah has 12 stickers. She finds 8 more. How many stickers does she have now? Show your working.

9. Extension challenge: Find three numbers that add to 20 (for example 5 + 7 + 8). Write your three numbers and show how they add to 20.

Extension activity: Create your own word problem that adds to 20 and swap with a partner.

Additional support: Use counters or draw ten-frames to help if you are unsure. Teacher may give some learners a number line from 0–20.

Adding to Twenty Worksheet

Adding to Twenty Worksheet

WALT: We Are Learning To add numbers to make 20

📚 Part 1: Quick Questions

✏️ Part 2: Short Answers and Activities

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