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Kindergarten math · Unit 6: Teen numbers and the number line

The 1 in 16 means ten

What this lesson shows

Fixes a mistake

Sixteen says the 6 first, but 16 is 1 ten and 6 ones. Eleven and twelve hide their ten too.

The worked example

The lesson works this one step by step: 16 as a ten and ones. Then your kid tries one like it on paper.

The steps

  1. The 1 is a ten
  2. The other digit is ones
  3. A ten and some ones
  4. Say it: 16 is ten and 6

Helping at home

Read each box aloud. Point to the full frame: "this is the 1 in the number, a whole ten." Then your kid counts on the ones and writes the number.

If your kid gets stuck

The 1 is a full ten frame.

Watch it with Lux

With Lux, this lesson is a narrated video and a printed page your kid works on. Then Lux helps with the same math on their own worksheet, one question at a time.

See how Lux works

Standards

  • Common Core K.NBT.A.1
    Compose and decompose numbers from 11 to 19 into ten ones and some further ones, e.g., by using objects or drawings, and record each composition or decomposition by a drawing or equation (such as 18 = 10 + 8); understand that these numbers are composed of ten ones and one, two, three, four, five, six, seven, eight, or nine ones.
Matches standards in 47 statesSee each state's code

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