Number bonds · 9

Number Bonds of 9

4 pairs of numbers from 1 up make 9. Add 0 and 9 and that's 5.

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The pairs that make 9

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How to learn the bonds of 9

Each bond of 9 is 1 short of a bond of 10. Children meet these before they're ready for 10, and on a ten-frame the 9 counters always leave 1 empty square.

The facts in these bonds

AddTurned aroundTake awayTake away
1 + 8 = 98 + 1 = 99 − 1 = 89 − 8 = 1
2 + 7 = 97 + 2 = 99 − 2 = 79 − 7 = 2
3 + 6 = 96 + 3 = 99 − 3 = 69 − 6 = 3
4 + 5 = 95 + 4 = 99 − 4 = 59 − 5 = 4

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Bonds of 9 FAQ

What are the number bonds of 9?

0 and 9, 1 and 8, 2 and 7, 3 and 6, 4 and 5. Each pair works turned around too.

How many number bonds does 9 have?

5 pairs, counting 0 and 9. There's no double, because 9 is odd.

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Yes. The whole game plays free in your browser, with no signup, no ads and no time limit. All fourteen mini games are in it. An iPhone app is on its way, and you can read what it will add.

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We're building a Sumtown app for iPhone with the parts that need a real app: offline play for car rides, a town map that remembers how far your child got, and a parent report on every fact. Until then, the whole game is free right here.

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