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

Kids complete each equation on this third grade math worksheet by determining whether an equation is addition or subtraction and writing in the correct sign.

Kids use details from the word problems on this third grade math worksheet to construct and solve subtraction problems with numbers up to three digits long.

Kids flex their mental math and subtraction fact skills as they solve word problems.