Column subtraction without exchange

Now your child has a secure understanding of the value of digits within each column they are ready to move to column subtraction without exchange.

This means that the number they are subtracting from has a larger number in the units column than the number they are subtracting.

e.g.      47 – 24 =       or           56 – 31 =

Explain the importance of keeping the sum and the answer in columns  as this will help to prevent mistakes when subtracting .

Watch the clip below to practice this method with your child.


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