Step 2 / 4
The number just before
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Counting backwards · Numbers & Operations
Count back from 20 to 1, find the number just before, and spot mistakes in a backwards row.
This is step 2 of unit 6, “Counting backwards”, 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.