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Put your addition skills to the test with these puzzle boxes for second and third graders!

Put your addition skills to the test with these puzzle boxes for second and third graders!

Learn to use the compensation strategy to construct simpler subtraction problems in this colorful worksheet!

Addition doesn't have to be puzzling—practice finding sums with these puzzle boxes!

Addition doesn't have to be puzzling—practice finding sums with these second- and third-grade puzzle boxes!

On this third grade math worksheet, kids round to estimate the sum of two numbers, a useful strategy for checking the results of calculations.