Written methods of subtraction

Using squared paper to help set out formal written subtraction.

Using the standard written method to subtract a 2-digit number from a 2-digit number.

Written subtraction using 3-digit numbers; easier examples.

Subtract whole hundreds from 3-digit numbers using written methods.

Use the standard written method to subtract a 2-digit number from a 3-digit number.

Subtraction Calculating Concepts for Year 3

Subtract whole tens from 3-digit numbers using written methods.

Subtraction by decomposition is the way most adults are familiar with and is the way that children will ultimately use for larger numbers. Here is an introductory exploration of the idea.