Step-by-step Maths Level 2 · Taking away within 20 · Summary
Step-by-step Maths Level 2 Taking away within 20: summary and key words
Part of the Step-by-step Maths Level 2 taking away within 20 chapter. Chapter overview · whole chapter on one page
Chapter summary
| Skill | Method |
|---|---|
| Counting back | Start at the first number and count back |
| Difference | Count up from the smaller number; count the steps |
| Through 10 | Take away the part that reaches 10, then the rest |
| Taking away 10 | Only the tens digit changes |
| Missing and checking | Find the missing part; check by adding back |
Can you…?
- I can count back to take away a number up to 20
- I can count up to find the difference between two numbers
- I can use a bond to 10 to take away when I need to go through 10
- I can take away 10 from a number up to 20
- I can find a missing number and check by adding
Key terms
- take away
- subtract; make a number smaller
- difference
- how far apart two numbers are
- subtraction
- taking one number away from another
- check
- use addition to see if the subtraction is right