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Decompose 6

Students break the number 6 into two smaller parts in multiple ways, recording each decomposition with drawings, objects, or equations (e.g., 6 = 1 + 5, 6 = 2 + 4).

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Decompose 6

Kindergarten · Decomposing Numbers and Making 10 · question 1 of 3

0 of 12

12 rungs. A star at the top.

6 = 1 +

How it is taught

0:00 of 1:43

Six can be split into parts.

The parts add to six.

Read it: 2 parts make 10

There are 10 crackers. 2 go on 1 tray and 8 on the other. 10 = 2 + 8.

  1. Put some on tray 1: 2.
  2. Count tray 2: 8.
  3. Say it: 10 = 2 + 8.

Moving crackers to another tray does not change how many there are.

So 2 on one tray and 8 on the other are still 10.

10 can be split in many ways: 1 and 9 is another one.

A number is 2 parts put together.

Thinking some crackers are gone when they move to the other tray.

Count both trays. 2 and 8 make 10.

6 = 3 + ___ — 3. Count on from 3: 4, 5, 6. That is 3.

6 = 4 + 2

Let's learn how to break the number six into two smaller parts. We call this decomposing.

Imagine six little apples sitting in a row.

Let's count them together: one, two, three, four, five, six!

Now we'll split our apples into two groups by drawing a line.

On this side, we have four apples.

And on this side, we have two apples.

Let's break 6 into two parts!Decompose 6123456426=4+26 = 3 + 36 = 1 + 5MAKES6many ways!
Kindergarten · Breaking 6 into two smaller parts

So six equals four plus two. We just decomposed six!

But that's not the only way. Six can also be three plus three, or one plus five.

Six can be made in lots of ways. Great job decomposing six!

What you see

While they climb, your page writes one true line to ask about tonight, and a short note each Sunday.

MayaGrade 3 · Mathematics
Did you know?

A chessboard has 64 squares — share them out between the 8 rows and each row holds exactly 8.

Today’s goal
1 star — one skill mastered, every rung of its ladder climbed
Climbing now
Divide within 100

An example student.

MayaGrade 3 · Mathematics

Maya earned 2 stars this week — Interpret multiplication as equal groups, which took 6 answers over 3 days before its star landed 3 days ago and Multiply by 6, 7, 8 and 9. Next up: Divide within 100.

An example week.

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