Children practice writing numbers from expanded forms, and expanded forms from numbers.

Two-digit addition got your second grader down? Liven up math practice with this extraordinary worksheet.

Children practice finding the sum of two three-digit whole numbers, with no regrouping, in this math worksheet.

Let's see how those addition skills have blossomed over the course of the year! Use this quick math assessment to gauge your students' abilities to add three-digit numbers, both with and without regrouping.

The partial sums method uses place value to help organize multi-digit math problems. Help your child master this strategy with a few practice problems.

Is addition with regrouping giving your child trouble? Addition problems are fun to solve in this monster-filled worksheet that doubles as a coloring page!

Adding large numbers can be tough, but rounding makes it easy. Use rounding to the nearest 100 to make complicated addition problems simple.

Decode the secret message Ninja Aki has sent you! He writes his messages in addition and subtraction problems. Solve and unravel his secret ninja message!

Addition will probably be the most basic and most constant use of math for any kid or adult. This worksheet will give your child lots of practice with it.

This colorful math worksheet will get your second grader practicing double-digit addition--with carrying!

Boost your child's addition fact fluency with this second grade math worksheet offering two-digit addition problems that require carrying.

Use this worksheet to practice two strategies for solving three-digit addition problems. Students will flex their math muscles as they use both the expanded notation and standard algorithm strategies to solve challenging math problems.

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.

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.

Help your math ninja with his addition and target practice. He can practice two-digit addition and carrying (also called regrouping) with this worksheet!

Hurry! If these numbers aren't added quickly using regrouping, they'll pop!

Help your second grader master double-digit addition and carrying with this fun, bird-bedecked math worksheet.

Your first grader will love learning double-digit addition with this company of the crazy creatures on this charming worksheet!

Addition gets a hand-up with this math ninja worksheet; part of a set of ninja themed two-digit arithmetic printables!

Once your child masters addition with carrying, there's practically no number too big for her to add!

Kids help Olga the Octopus on this second grade math worksheet by solving subtraction problems with two-digit numbers using regrouping.

Does your second grader need a math boost? Help her get a grip on her two-digit addition skills--and a super power--with this dynamic worksheet.

Help your second grader strengthen her two-digit addition skills ... and pretend she's a super hero at the same time!

Can your child flex addition skills to solve these ninja riddles? Help her master double-digit addition with practice. Fine more ninja riddles and math here!

Let this cheery, colorful worksheet cheer your second grader on as he practices double-digit addition!

Give your second grader a helping hand with two-digit addition with an addition worksheet with a fun, super hero theme.

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

Combining two-digit addition with a special word puzzle, this 2nd grade worksheet makes practicing math fun!