Add and subtract positives and negatives, crossing zero on the number line, then drop your buoy on the answer — integer arithmetic made visual.
On each turn, a child adds or subtracts positive and negative integers — crossing zero in either direction — then drops a marker at the answer on the number line. The visual approach builds a real feel for integer arithmetic: working with negative numbers rather than just applying a sign rule. Best for Grades 5–6, or any student who has met integers and wants to make sense of them.
A free, no-signup, no-ads math game for Grades 5–6 — practising integers, negative-numbers, addition, subtraction. Play in your browser on the KidsDoMath games hub or explore more Arithmetic games.
By grade level: 5th Grade Math Games6th Grade Math Games
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What math does Integer Island practice? Integer Island practices Integers, Negative Numbers, Addition, Subtraction. On each turn, a child adds or subtracts positive and negative integers — crossing zero in either direction — then drops a marker at the answer on the number line.
What grade is Integer Island for? Integer Island is built for Grades 5–6 (ages 10–12). It sits in the Arithmetic strand, and it ramps across 8 levels so younger or older players find their own pace.
How do you play Integer Island? Add and subtract positives and negatives, crossing zero on the number line, then drop your buoy on the answer — integer arithmetic made visual.
Is Integer Island free to play? Yes. Integer Island is free, with no ads and no sign-up, and it runs in the browser on a phone, tablet or computer.