Finish by splitting the first number

Make 10 to add · Numbers & Operations

For sums over 10 like 9 + 3, split one number to make 10 first. This is the idea behind carrying.

This is step 5 of unit 40, “Make 10 to add”, 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.