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

What has to be broken before it can be used? Find out the answer to this riddle and more in this fun riddle and math combination worksheet.