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.

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

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.

Learners solve 12 three- and four-digit problems as they work on their multidigit addition skills.

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