How many ones?

Tens and ones to 50 · Numbers & Operations

Group things in tens, then read the tens and ones as a two-digit number.

This is step 3 of unit 20, “Tens and ones to 50”, 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.