Estimate the sum in each of these math problems. Challenge your child to round to the nearest hundred first, then add the two rounded numbers.

How many shells did Sally sell by the seashore? Get your student in gear for math with this addition worksheet.

What do cows like to listen to? To find the answer to this riddle, your kids will need to sharpen their skills in basic addition. So saddle up and let those addition skills go wild!

In this worksheet, learn how to add the tens first when using a hundreds chart.

Give your kids extra addition practice with this worksheet, which teaches them that it's best to focus on the tens first.

Represent ones and tens with crayons in this fun worksheet.

Represent tens and ones with crayons in this fun worksheet.

This colorful worksheet allows you to combine your second grader's love of art with at-home addition practice with adding double-digits!

These school-inspired math word problems will challenge your student!

Use a visual model to solve these two-digit addition problems!

Practice adding multi-digit numbers in this second- and third-grade worksheet!

Master two-digit addition with these hundred chart problems!

Use this Arctic-themed resource with your students to practice multi-step word problems with mixed operations.

By breaking down numbers, your third graders will learn to do fast addition!

Continue exploring properties of operations while writing addition equations in this second-grade math worksheet!

Get more practice exploring properties of operations while writing addition equations in this second-grade math worksheet!

Explore properties of operations while writing addition equations in this second-grade math worksheet!

After kids solve the two-digit addition and subtraction problems on this second grade math worksheet, they use the key to color in the shapes on the mosaic.

This second grade math worksheet works in two parts: children solve the addition problems using carrying, then color the aliens adorning the page.

Who will be the winner in Darting Decimals? Your child decides as he adds up the decimal scores and determines which team has scored the most points.

Help your second grader swim to the end of the addition finish line with this entertaining worksheet!

Your second grader won't mind practicing addition with carrying with the friendly snail companions adorning the sides of this worksheet!

Two-digit addition troubling your second grader? The only way to get the concept down is practice, practice ... and more practice!

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

In this second grade math worksheet and coloring page, children practice addition with carrying, then color in the monsters adorning the page!

Doubling as a coloring page, this is not your average math worksheet. Children solve the addition problems using carrying, then break out the crayons.

With the help of this printable's adorable bee embellishments, your second grader will simply "buzz" through the fresh math concept of addition with carrying!

To figure out the name of the mystery super hero, your child simply needs to answer a page full of two-digit addition problems!

Challenge your second grader to complete this double-digit addition worksheet--along with the rest of the set--and watch their addition struggles disappear.

This second grade math worksheet does double duty as a coloring page! Children practice addition with carrying, then color the ladybug and flowers on the page.