# The Difference Bar 1

Pupils use mental strategies to work out the difference between 2 two-digit numbers where the answer is less than ten. They write and solve difference problems where one number is a two-digit number and the other is a single digit number. Students describe the mental strategies they are using to solve difference problems, including the connection to subtraction and addition. Pupils use a web site, "The Difference Bar" to find solutions.

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