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The number between
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One more, one less · Numbers & Operations
Know the number that is one more or one less, and find numbers before and after.
This is step 3 of unit 5, “One more, one less”, in Stage 2: Numbers to 100, carrying and borrowing (ages 7–8). A round has 10 problems; 90% or better earns three stars. Everything is free with no sign-up, and your stars and XP are saved on this device.