Step-by-step Maths Level 2 · Number bonds to 20 · Summary
Step-by-step Maths Level 2 Number bonds to 20: summary and key words
Part of the Step-by-step Maths Level 2 number bonds to 20 chapter. Chapter overview · whole chapter on one page
Chapter summary
| Skill | Method |
|---|---|
| Pairs that make 20 | Take the known part away from 20 |
| Bonds to 10 help | Take 10 away from 20, then the rest away from 10 |
| Part-whole pictures | The whole is 20. Take the known part away |
| Related facts | Use the same three numbers: two parts and the whole |
Can you…?
- I can say the pairs that make 20
- I can use bonds to 10 to find bonds to 20
- I can find the missing part in a bond picture with a whole of 20
- I can write the related facts for a bond to 20
Key terms
- bond to 20
- two numbers that add up to 20, such as 13 and 7
- whole
- the number we get when the parts are put together
- part
- one of the numbers that makes the whole
- related facts
- the addition and subtraction facts that use the same three numbers