Helping your child with subtraction. Partitioning sets Seeing 12 as made up of 5 and 7.

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Presentation transcript:

Helping your child with subtraction

Partitioning sets Seeing 12 as made up of 5 and 7

Take Away (counting back) Subtraction Find the difference (counting on)

Counting back/take away/reduction :

Practical subtraction: exchanging where necessary =

leading to or 6 7 Vertical subtraction

or 7 Vertical subtraction

leading to or Vertical subtraction

leading to or Vertical subtraction

Vertical subtraction: in the context of money

Finding the difference Using language such as ‘How many more?, ‘How much taller?’ and ‘ The difference between.

Finding the difference What is the difference between 12 and 17?

Finding the difference

How can you help  Practical/real life opportunities for taking away and counting on (‘How many more?’).  Letting your children become familiar with coins e.g. when shopping or to use in a pretend shop.  Games where children can practise number facts, place value and subtraction.

Whoever has the difference closest to 1000 wins. Scoring  A point for a win. The first person to reach 10 wins the game.  Each player keeps a running total of their "penalty points", the difference between their result and 1000 after each round. First to 5000 loses. Dicey Operations