Activity
Math Is Fun: Addition in Columns Activity
Math Is Fun

Math Is Fun: Addition in Columns

For Students 3rd - 5th
Simple instruction on how to perform addition of two- and three-digit numbers using columns. View animated examples and follow links to column addition worksheets.
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Activity
Number Nut: Addition: Adding Three Digit Numbers Activity
NumberNut

Number Nut: Addition: Adding Three Digit Numbers

For Students 3rd - 5th Standards
Explains how to add three-digit numbers by focusing on each column of digits as you add.
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Activity
Number Nut: Subtraction: 3 Digit Numbers Activity
NumberNut

Number Nut: Subtraction: 3 Digit Numbers

For Students 3rd - 8th Standards
A brief lesson on subtracting from three-digit numbers that includes detailed examples, rules, and further explanation of borrowing.
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