Step 1 / 3
Ten plus what?
★★★16 = 10 + 6: a ten plus some ones.
Addition Village · Learn first
Example
What number goes in the box?
10 + = 13
Answer: 3
Write as a sum · Numbers & Operations
Write a number as the sum of two numbers, like 16 = 10 + 6.
16 = 10 + 6: a ten plus some ones.
This is step 1 of unit 17, “Write as a sum”, in Stage 1: Numbers to 20, adding and subtracting (ages 6–7). A round has 8 problems; 90% or better earns three stars. Everything is free with no sign-up, and your stars and XP are saved on this device.