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2.22 Combining multiplication with addition and subtraction


Created on 28 August 2019 by ncetm_administrator
Updated on 30 August 2019 by ncetm_administrator

Introduction

Learn to combine multiplication with addition or subtraction. Learn to use brackets to change the order of operations. Build on knowledge of the distributive law.

Teaching points

  • Teaching point 1: Multiplication can be combined with addition and subtraction; when there are no brackets, multiplication is completed before addition or subtraction; when there are brackets, the calculation within the brackets is completed first.
     
  • Teaching point 2: When adding or subtracting multiplication expressions that have a common factor, the distributive law can be applied.
     

 

 

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