Add and subtract within 10
Free practice for add and subtract within 10. It loads instantly, there is nothing to sign up for, and it stops after eight questions.
What this skill is
Automatic recall of facts frees working memory for the actual problem. The order matters: strategy first, then speed. A fact only enters timed practice once the child can already derive it.
Three ways to teach it at home
- Never time a fact they cannot yet work out by strategy. Timing converts a known strategy into recall; it does not create knowledge.
- Keep it short — two or three minutes — and end on facts they already know.
- Compare them only to their own previous best, out loud, and never to a sibling or a class.
Where this sits in the ladder
Questions people actually ask
What grade is "add and subtract within 10"?
It sits in grade 1 in most sequences, and it is aligned to 1.OA.C.6. In Ladderbug it opens once add and subtract within 5 and number bonds to 10 are solid — grade labels are a rough guide, and readiness is what actually matters.
Is this game free?
Yes. This page needs no account, no email and no card, and there are no advertisements. It saves progress in your own browser.
What mistakes should I watch for?
Recounts from one instead of counting on. We probe for it deliberately by offering that exact wrong answer as a choice, and if a child picks it twice we go back to making ten rather than repeating the same question.
This is one rung of 82.
Open the whole ladder — free