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.

Use these cards to help students see the difference between adding three-digit numbers using the standard algorithm and expanded notation.

Use this worksheet to continue practice with two addition strategies: expanded notation and standard algorithm. Students will be challenged to solve three-digit addition problems and then check their work using multiple methods.

If your child likes to carry, then this is the worksheet for her!