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Progression in Calculations Lower Key Stage 2

Learn efficient calculations, column addition and subtraction, multiplication principles, division concepts, and efficient methods like arrays and chunking. Develop a strong foundation in mathematical operations.

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Progression in Calculations Lower Key Stage 2

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  1. Progression in CalculationsLower Key Stage 2

  2. T U 6 7 Beginning Column Addition 2 4 + 1 1 8 0 9 1

  3. HT U 1 6 4 Efficient Column Addition 2 7 5 + 4 2 1 1 1

  4. Moving on to Number lines 52 61 61 - 52

  5. Beginning Column Subtraction

  6. Beginning Column Subtraction (Exchange)

  7. Continuing Column Subtraction U H T 200 10 1 1 300 20 1 e.g. 321 - 157 - 100 50 7 100 60 4 = 164

  8. HT U 1 2 1 1 3 2 1 1 7 5 - 6 4 1

  9. Multiplication Children need to understand the concept of multiplication, that it is: Repeated addition Can be represented as an array They also need to understand and work with certain principles: Inverse of division Is commutative i.e. 3 x 5 = 5 x 3 Is associative i.e. 2 x (3 x 5) = (2 x 3) x 5

  10. Use of Arrays Children need to understand how arrays link to multiplication through repeated addition and be able to create their own arrays.

  11. Continuation of Arrays Creating arrays on squared paper (this also links to understanding area).

  12. Grid Method 16 x 7 10 x 7 = 6x 7 =

  13. Grid Method 10 6 42 70 70 42 112 7 +

  14. Grid Method 600 100 90 15 805 + Children have to develop their understanding of related facts. e.g. 23 x 35

  15. Division Children need to understand the concept of division, that it is: Repeated subtraction They also need to understand and work with certain principles: Inverse of multiplication Is not commutative i.e. 15 ÷3 ≠ 3 ÷ 15 Is not associative i.e. 30 ÷ (5 ÷ 2) ≠ (30 ÷ 5) ÷ 2

  16. Division as Sharing Children naturally start their learning of division as division by sharing, e.g. 6 ÷2.

  17. Division as Grouping To become more efficient, children need to develop the understanding of division as grouping, e.g. 6 ÷2.

  18. Division as Grouping To continue their learning, children need to understand that division calculations sometimes have remainders, e.g. 13 ÷ 4. They also need to develop their understanding of whether the remainder needs to be rounded up or down depending on the context.

  19. 48 ÷ 4 = 12 -4 -4 -4 -4 -4 -4 -4 -4

  20. 48 ÷ 4 = 12 48 -4 44 -4 40 -4 36 -4 32 -4 10 groups 28 -4 24 -4 20 -4 16 -4 12 -4 8 -4 2 groups 4 -4 0

  21. Division by Chunking Recall of multiplication tables helps make this method more efficient, e.g. 72 ÷ 3.

  22. Key Messages For written calculations it is essential that there is a progression which culminates in one method. The individual steps within the progression are important in scaffolding children’s understanding and should not be rushed through. Practical equipment, models and images are crucial in supporting children’s understanding.

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