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Number bonds to 20. Mental Mathematics Starters Activity 5. Mathematics Objective. Know by heart all addition and subtraction facts for each number to 20. Using this should help you learn:. To remember number bonds to 20 so you can quickly answer questions correctly. Target = 15 out of 20.
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Number bonds to 20 Mental Mathematics Starters Activity 5
Mathematics Objective • Know by heart all addition and subtraction facts for each number to 20.
Using this should help you learn: • To remember number bonds to 20 so you can quickly answer questions correctly. • Target = 15 out of 20
1. Write the missing number: • 3 + 4 = • 5 + = 9
2. Write the missing number: • 7 + 4 = • 6 + = 12
3. Write the missing number: • 9 + = 14 • 15 - = 9
4. Write the missing number: • 6 + 7 = • - 8 = 9
5. Write the missing number: • 6 + = 12 • + 7 = 19
6. Write the missing number: • + 2 = 11 • 10 + = 16
7. Write the missing number: • 6 + = 19 • 5 + 9 =
8. Write the missing number: • 3 + 14 = • 18 - = 7
9. Write the missing number: • 13 + 7 = • 9 + = 20
10. Write the missing number: • 13 + 4 = • 13 - = 9
11. Write the missing number: • 7 + 7 = • 8 + = 19
12. Write the missing number: • + 8 = 11 • 12 + = 20
13. Write the missing number: • 17 + = 20 • 20 - = 9
14. Write the missing number: • 15 + 2 = • 17 - 9 =
15. Write the missing number: • 8 + 8 = • 19 + = 19
16. Write the missing number: • 2 + 16 = • 9 + = 16
17. Write the missing number: • 20 + = 20 • 20 - = 7
18. Write the missing number: • 3 + 4 = • 5 + = 9
19. Write the missing number: • 3 + 4 = • 5 + = 9
20. Write the missing number: • 3 + 4 = • 5 + = 9
Evaluation . . . Did you: • Answer at least 15 out of the 20 questions correctly?