Skip to content
PlayOwl

Mathematics · Kindergarten

Compose and Decompose Small Numbers

Seven can be 5 and 2, or 4 and 3, or 6 and 1. Children break numbers up to 10 into two parts in different ways, record them with equations like 7 = 4 + 3, find every way to split a small number in an organised list, and find the partner that makes 10 for any number from 1 to 9 using a ten strip.

  • 3 lessons
  • About 45 minutes
  • Number partners check: 6 questions
  • Ways to answer: fill in the blanks, choose an answer, match pairs, type a number, put in order and sort into groups
See plans Included with Family, Teacher and School plans. Open in PlayOwl

What learners will discover

  • Break a number up to 10 into two parts in more than one way and record each with a drawing or an equation such as 7 = 4 + 3.
  • Find all the ways to split a small number into two parts by working in order.
  • For any number from 1 to 9, find the number that makes 10 with it, using a ten strip.

Lessons

  1. Two parts make the whole 5 steps3 practiceabout 15 min
  2. All the ways 5 steps3 practiceabout 14 min
  3. Partners of ten 6 steps3 practiceabout 16 min
  4. Number partners check 6 questions at the end

Keep exploring

Games to practice with

  • Number-Line HopHelp the frog hop to the right number — from counting to negative fractions.
  • Paint by AnswersSolve each space, dip your brush and watch a picture come to life.
  • Shape PicnicSet up Olly's picnic by putting every shape on its matching outline.

More kindergarten math

Guide for grown-ups