Please watch these videos which provide a step-by-step explanation of the method and then use the handouts (linked on the right) to practise.

Addition

Subtraction

Single Digit Addition

Single Digit Subtraction

Adding 3 Numbers

Missing Number Problems

Multiplication (ones)

Multiplication (tens)

Division (ones)

Division (tens)

Finding Fractions of Amounts (unit)

Finding Fractions of Amounts (non-unit)