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.

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

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!

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

This math worksheet tests your child's addition and riddle-solving skills. Find out the answer to the riddle, "Which month has 28 days?"

Add like mad with our thrilling addition worksheet! This three-minute math drill gets your child racing to complete all the addition equations on the page.

Use Election Night to teach your child about politics and government, and have them add up the electoral votes each presidential candidate earns throughout the night.

What do sea monsters eat? Solve the math problems in this worksheet to reveal the answer! This math worksheets gets kids to build math and spelling skills.

The best way to solve a complicated problem is to break it down. Help your students use the Read, Write, Draw strategy to solve word problems with this worksheet.

The game requires players to solve two-step, mixed operation word problems during their turn. Similar to Connect Four, each solved problem earns the player an X or O.

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

Use this glossary with the EL Support Lesson: Thinking Deeply About Word Problems.

Use this glossary with the EL Support Lesson Plan: Compare & Contrast Addition Strategies.

Use these vocabulary cards with the EL Support Lesson: Thinking Deeply About Word Problems.

Use these vocabulary cards with the EL Support Lesson Plan: Compare & Contrast Addition Strategies.

With this worksheet students will practice using the number line strategy to add three-digit numbers.

Addition and subtraction practice can get a little repetitive, so mix it up with this funny under the sea worksheet.

Searching for a worksheet that practices addition regrouping? This printable is perfect for practicing addition skills like carrying the tens column.

Children will put their three-digit addition skills to the test as they solve 23 practice problems in this math worksheet.

Adding up big numbers can be tricky. Teach your budding mathematician a helpful trick to keep the numbers in line with carrying!

Help your child get used to addition with carrying so that she'll be all ready to go by the time it's introduced in school.

Does your child ever wonder where to put the numbers she carries over in addition problems? He'll wonder no more with this helpful worksheet!

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.