Greatest Difference Wins

By the end of the lesson students will be able to accurately subtract 2 three-digit numbers and notate their strategy for solving the problem. Use place value understanding and properties of operations to add and subtract. Materials: Greatest Difference Wins spinner boards, Greatest Difference Wins recording sheet, arrow Cards, calculators, white boards, markers, other games that have been played can also be used during centers. Place the spinner on the overhead projector or document camera and have students spin to generate 2, three-digit numbers.