Tens and ones minus tens

Two-digit subtraction · Numbers & Operations

Subtract the ones, then the tens. Solve no-borrow subtraction in columns too.

This is step 3 of unit 31, “Two-digit subtraction”, 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.