Subtraction. Matching objects to numbers (less than 20) and then removing objects from the group.

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Presentation transcript:

Subtraction

Matching objects to numbers (less than 20) and then removing objects from the group.

Counting back using bead strings, number lines and 100 squares.

Using a number line to carry out 2- digit subtractions by partitioning the second number (smaller number).

Find the difference between two numbers by counting up from the smaller to the larger.

Decomposition by partitioning the numbers and setting out the subtraction vertically.

Decomposition using exchanging

Standard written methods for vertical subtraction using larger numbers and decimals.