Add 2 digits to a multiple of 10 (bar model)

Add a 2-digit number to a multiple of 10, with bar models to help.

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Add a 2-digit number to a multiple of 10, with no additional help.

Add a 2-digit number to a multiple of 10, with a part whole model to help.

Add a 2-digit number to a multiple of 10, speed challenge.

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