Tens and ones

Numbers to 100 · Numbers & Operations

Count by tens, tell tens from ones, and compare two-digit numbers.

This is step 3 of unit 3, “Numbers to 100”, in Stage 2: Carrying, borrowing and numbers to 100 (ages 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.