What Makes 10 (and 100)? — Fast Number-Bond Game
Use this free What Makes 10? game to master number bonds. A number appears and you supply the part that completes 10 (or 100) — fast, timed practice of the pairs that make mental addition and subtraction effortless.
How to play
- Choose the target (10 or 100) and press Start.
- Type the number that adds to the target with the one shown.
- Keep going to raise your score and streak before time runs out.
Why number bonds matter
Knowing the pairs that make 10 and 100 by heart speeds up regrouping, mental addition, and making change — a foundation for nearly all arithmetic.
Original price was: $109.99.$54.99Current price is: $54.99.
Frequently asked questions
What is a number bond?
A pair of numbers that add to a target — like 3 and 7 making 10. This game drills those pairs.
Can I practice bonds to 100?
Yes — switch the target to 100 to practice the pairs that complete a hundred.
Original price was: $109.99.$54.99Current price is: $54.99.
Who is it for?
Anyone building mental-math speed, from early learners to test-takers brushing up.
Original price was: $109.99.$54.99Current price is: $54.99.
Looking to learn the math behind the game? Read the related lesson.
Original price was: $27.99.$17.99Current price is: $17.99.
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