Number Bonds Game
A number bonds math game against the clock: a number appears and you type what makes it up to 10, 20, 50, or 100. How many can you do in 60 seconds?
Number Bonds Game
A number flashes up - type the number that makes it up to the target. How many bonds can you complete in 60 seconds?
Score: 0 1:00
7 + ? = 10
Time!
Number bonds are the pairs that add up to a round number - 7 and 3 make 10, 60 and 40 make 100. Knowing them by heart makes mental addition and subtraction much faster. This game flashes a number and asks for its partner, and counts how many you complete in a minute.
How to Play
- Choose the target to make - 10, 20, 50, or 100.
- Press Start. A number appears; type the number that adds to the target and press Enter.
- Keep going for 60 seconds. Your best score for each target is saved on your device.
Why Bonds Matter
Strong number bonds are the building block for fast addition, subtraction, and making change. Bonds to 10 come first, then 20 and 100 build on the same idea.
Practice More
- Print mixed practice with the addition worksheet generator.
- Step up to full arithmetic in the math speed test.
- Build times-table recall with the times tables grid.