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SO — SoomaaliEN — English

Bridging 100: counting on and back in 10s, adding/subtracting multiples of 10

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Why this, why now

In this unit pupils will find pairs of number that compose 100. They will position 3-digit numbers on a number line and estimate their position on unmarked number lines. They will compare and order 3-digit numbers.

Prior knowledge requirements

  • Ardaydu waa inay yaqaanaan aasaaska maadada.
  • Ardaydu waa inay awoodaan inay raacaan tilmaamo fudud.
Unit 3 / 20

Bridging 100: counting on and back in 10s, adding/subtracting multiples of 10

In this unit pupils will find pairs of number that compose 100. They will position 3-digit numbers on a number line and estimate their position on unmarked number lines. They will compare and order 3-digit numbers.

5 lessons
  1. Find 10 more or 10 less than a given number
  2. Cross the hundreds boundary when adding and subtracting any 2-digit multiple of 10
  3. Count across and on from 100
  4. Bridge 100 by adding or subtracting a single-digit number
  5. Represent a 3-digit number up to 199 in different ways