Add a multiple of 10 to 3 digits (timed)

Add a multiple of 10 to a 3-digit number, crossing 100.

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Add a multiple of 10 to a 3-digit number with a bar model, crossing 100.

Add two 3-digit numbers not crossing ten or hundred with bar models.

Add a multiple of 10 to a 3-digit number with a bar model, not crossing 100.

Add a multiple of 10 to a 3-digit number, crossing 100.

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