How it works
Make a ten to help: 8 + 5 is 8 + 2 more to ten, then 3 more.
To take away, get back to ten first.
Know your doubles: 6 + 6 = 12.
Worked examples
Make a ten
- ? = 3 + 7
- 3 and 7 are partners that make 10.
- Use pairs that make ten.
- So the answer is 10.
Take away from fourteen
- 14 − 8 = ?
- Go back to ten first: 14 − 4 = 10.
- Then take away the rest: 10 − 4 = 6.
- So the answer is 6.
From ten
- 10 − 4 = ?
- 10 take away 4.
- 10 is made of 6 and 4.
- So the answer is 6.
A taste of the worksheet
These are the first problems of set A. The printable sheet has many more, with an answer key.
- __ = 9 − 9
- __ = 1 + 8
- 8 − 4 = __
- 6 − 2 = __
- 10 − 7 = __
Words to know
- partners
- Two numbers that make a total together.
- doubles
- Two of the same number, like 6 + 6.
Watch out for
- Use ten as a stepping stone.
- Doubles help: 7 + 7 = 14.