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1.25 Addition and subtraction: money


Created on 02 October 2018 by ncetm_administrator
Updated on 02 October 2018 by ncetm_administrator

Introduction

Building on segments 1.23 and 1.24, introduce children to conventions for expressing monetary value and explore the equivalence of 100 p and £1; encourage children to select column algorithms or equivalent calculations where most appropriate.

Teaching points

  • Teaching point 1: One penny is one hundredth of a pound; conventions for expressing quantities of money are based on expressing numbers with tenths and hundredths.
     
  • Teaching point 2: Equivalent calculation strategies for addition can be used to efficiently add commonly-used prices.
     
  • Teaching point 3: The ‘working forwards’/‘finding the difference’ strategy for subtraction is an efficient way to calculate the change due when paying in whole pounds or notes.
     
  • Teaching point 4: Column methods can be used to add and subtract quantities of money.
     
  • Teaching point 5: Finding change when purchasing several items uses the part–part–(part–)whole structure.
     

 

 

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