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.

Give students practice adding three-digit numbers within 1,000! 

Help students make sense of numerical expressions by having them write out the numerical representations.

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

What is a math teacher's favorite dessert? Pi! Find more funny riddles by doing this worksheet--a perfect combination of math practice and brain teasers.

Why was 6 afraid of 7? 7 8 9 (seven ate nine)! Find more funny riddles to solve with this awesome addition worksheet.

Why is 2+2=5 like your left foot? ...Itâs not right! Find more riddles with this awesome worksheetâa perfect combination of math practice and brain teasers.

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.

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

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.

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.