Add two 3-digit numbers (bar model)

Using bar models to help with adding two 3-digit numbers not crossing tens or hundreds.

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Using bar modelling to help with adding three numbers to make 100.

Adding 3 numbers to make 1000 using bar models

Use bar modelling to help with making 1000.

Using bar models to help add a multiple of 10 to a 3-digit number.

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