Stage 1 · Number sense
Bonds to 10
Know each pair that makes 10 on sight.
How to do it
Method
Know each pair that makes 10 on sight
3 + 7 = 10, 4 + 6 = 10
Another way
Number bonds
10 splits into 3 and 7
In full
The pairs that make ten: 1+9, 2+8, 3+7, 4+6, 5+5, and 0+10. See one and the other should arrive instantly, without counting. Every carry, borrow and bridge later rests on this.
Worked examples
Have a go first, then open each one for the answer and the working.
Example 1
2 + ? = 10
Show the answer and working
Answer: 2 + 8 = 10
2 and 8 make ten, 2 + 8 = 10
Example 2
4 + ? = 10
Show the answer and working
Answer: 4 + 6 = 10
4 and 6 make ten, 4 + 6 = 10
Example 3
9 + ? = 10
Show the answer and working
Answer: 9 + 1 = 10
9 and 1 make ten, 9 + 1 = 10
Example 4
7 + ? = 10
Show the answer and working
Answer: 7 + 3 = 10
7 and 3 make ten, 7 + 3 = 10
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