Written subtraction: crossing the tens boundary

The standard written method for subtraction. All these are 3-digits take away 2-digits and all cross the tens boundary.

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The standard written method for subtraction, crossing the hundreds boundary. Remember that all working out should be shown.

More on the standard written method of subtraction, with zeros in the tens column which can cause difficulties.

Using the standard method to subtract 2-digit numbers.

Subtract multiples of 100 from 4-digit numbers with bar models.

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