Step-by-step Maths Level 1 · Number stories within 20 · Summary
Step-by-step Maths Level 1 Number stories within 20: summary and key words
Part of the Step-by-step Maths Level 1 number stories within 20 chapter. Chapter overview · whole chapter on one page
Chapter summary
| Skill | Method |
|---|---|
| Add or take away | More means add. Lost or given away means take away |
| Adding to 20 | Start at the bigger number and count on |
| Taking away from 20 | Start at the number and count back |
| Number sentences | Start, sign, number, answer. Check with the inverse |
Can you…?
- I can choose add or take away from a story
- I can add two numbers to make a total up to 20
- I can take away from a number up to 20
- I can write a number sentence for a story
- I can check an answer by doing the inverse
Key terms
- number story
- a short story with numbers that tells you to add or take away
- number sentence
- a sum with numbers, a sign and an answer
- inverse
- the opposite operation: add undoes take away, and take away undoes add