Step 4 / 4
Borrowing on a ten frame
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Subtract within 20 · Numbers & Operations
No-borrow subtraction, then borrowing from the ten, then missing numbers.
This is step 4 of unit 43, “Subtract within 20”, 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.