Step 3 / 3
Which equals 10?
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Back to ten · Numbers & Operations
12 − 2 = 10. Take away all the ones and ten is left.
This is step 3 of unit 24, “Back to ten”, in Stage 1: Numbers to 20, adding and subtracting (ages 6–7). A round has 8 problems; 90% or better earns three stars. Everything is free with no sign-up, and your stars and XP are saved on this device.