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.

Does your second grader need some help with the nuts and bolts of addition? Mark the Mechanic does, too!

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!

Combining addition problems with a word puzzle at the end, this 2nd grade worksheet makes practicing math fun without skimping on the addition help!

Vicky the Veterinarian needs some help adding up the animals in her kingdom. Can your second grader give her some assistance with double-digit addition?

Can your second grader help out Bill the Builder? She'll answer a page full of double-digit addition, and boost his addition skills in the process!

Featuring two-digit addition problems and a bonus word puzzle at the end, this 2nd grade worksheet is big on fun without skimping on the math enrichment.

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

Can your second grader add up these double-digit addition problems to help out Charlie the Chef?

Featuring a word puzzle at the end, this 2nd grade math worksheet makes two-digit addition new and exciting!

If your little mathematician helps out Ted the Farmer, he'll get some great addition practice as he assists a friend.

Ask your second grader to help out Ken the Carpenter, and his double-digit addition skills will get a boost, too!

Spark your second grader's interest in addition with this colorful worksheet. He'll boost his math skills as he helps out Pete the Plumber!

Once she's added up the numbers in this 2nd grade math worksheet, your child will use her answers to uncover a hidden word.

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

As your second grader completes a heap of addition problems and helps out Phil the Painter, she'll increase her confidence with double-digit addition.

Can your second grader help out Tina the Tailor by solving a cluster a double-digit addition problems and a bonus real-world word problem?

Your second grader will practice his addition facts and have fun doing it in this math worksheet featuring two-digit addition and a word puzzle at the end!

Sneak in a little math before bedtime with this cheerful 2nd grade worksheet that includes two-digit addition with carrying and a fun word puzzle at the end.

Keep your child busy on snowy days with this winter-themed 2nd grade math worksheet. They'll practice two-digit addition, then crack a word puzzle at the end.

Get your second grader to practice two-digit addition with carrying with this pretty purse-themed math worksheet that includes a fun word puzzle at the end.

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!

See if you get stumped with this math riddle! This great worksheet is full of addition problems for your student to practice.

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

If your second grader has an affinity for florals, this adorable worksheet may get her excited about addition!

Kids can practice two-digit addition, then crack a word puzzle using their answers in this 2nd grade math worksheet.

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!