Manipulate the Calculation Subtraction : All Versions

Content Name

Manipulate the Calculation Subtraction : All Versions

Content Type

Partner Content

Description

Pirate Captains Hugh and Bert are trying to work out how much more treasure one has than the other. Their parrot, Percy, comes up with a sneaky variation to make finding the difference between the amounts easier! This is a mental subtraction strategy called Manipulate the Calculation or Same Difference.

Curricula

• Country

  England

  Key Stage:

  Key Stage 1, Key Stage 2

  Years:

  Year 2, Year 3, Year 4, Year 1, Year 5, Year 6

  Subjects:

  • Mathematics

  Topics:

  • Number - addition and subtraction
  • Number - addition, subtraction, multiplication and division

  Programmes of Study:

  • add and subtract numbers mentally, including: a three-digit number and 1s
  • add and subtract numbers mentally, including: a three-digit number and 10s
  • add and subtract numbers mentally, including: a three-digit number and 100s
  • add and subtract numbers mentally with increasingly large numbers
  • add and subtract numbers using concrete objects, pictorial representations, and mentally, including: 2 two-digit numbers
  • perform mental calculations, including with mixed operations and large numbers

• Country

  Northern Ireland

  Key Stage:

  Foundation Stage, Key Stage 1, Key Stage 2

  Years:

  P2, P3, P4, P5, P6, P7

  Subjects:

  • Mathematics and Numeracy

  Topics:

  • Number
  • Number: Operations and their Applications

  Programmes of Study:

  • Be aware of and develop strategies to add and subtract mentally.
  • Develop strategies to add and subtract mentally within 100.

• Country

  Scotland

  Level:

  First, Second

  Years:

  P2, P3, P4, P5, P6, P7

  Subjects:

  • Numeracy and Maths

  Topics:

  • Number, Money and Measure

  Programmes of Study:

  • I can use addition, subtraction, multiplication and division when solving problems, making best use of the mental strategies and written skills I have developed.

• Country

  Wales

  Step:

  PS 2, PS 3

  Years:

  Year 1, Year 2, Year 3, Year 4, Year 5, Year 6

  Subjects:

  • Mathematics and Numeracy

  Topics:

  • The number system is used to represent and compare relationships between numbers and quantities.

  Programmes of Study:

  • I have explored additive relationships, using a range of representations. I can add and subtract whole numbers, using a variety of written and mental methods.

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