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Teens with blocks

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One ten and 3 ones make 13.

Cloud Bridge · Learn first

Example

1 tens and 9 ones. What number is that?

Answer: 19

Steps in this unit · Ten and the teens

1 2 3

← Most and least water Say the teens (1) →

Ten and the teens · Numbers & Operations

Know that one more than 9 is 10, and show teens as a ten and some ones.

One ten and 3 ones make 13.

This is step 1 of unit 18, “Ten and the teens”, 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.