Ages 6–7, Ages 8–10
Number Bonds to 20
Find complements to 20 quickly and accurately.
How to play
Find the missing part: whole minus the known part.
Skills
This game builds part-whole number sense by showing that one number can be composed from two parts.
How difficulty grows
Later levels use larger totals and closer choices, rewarding fluent recall of familiar pairs.
Example task
If the whole is 10 and one part is 6, find the part that completes 6 to 10.
When to move on
When pairs are fluent, move from bonds to 5 to 10 and then 20, and apply them in addition.
Continue with this skill: Number Bonds Games for Kids Online
The game starts instantly and does not require an account.
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