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Steps in this unit · Adding and subtracting together

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Adding and subtracting together · Numbers & Operations

Turn one addition into two subtractions, and one subtraction into two additions.

This is step 2 of unit 12, “Adding and subtracting together”, 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.