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

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.

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

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

This math fluency checklist is a great tool that can be used to encourage students to use different strategies to solve math problems efficiently and accurately.

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.

Addition will probably be the most basic and most constant use of math for any kid or adult. This worksheet will give your child lots of practice with it.

Kids solve addition problems with three-digit addends using regrouping on this third grade math worksheet.

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.

The partial sums method uses place value to help organize multi-digit math problems. Help your child master this strategy with a few practice problems.

Practice two-and three-digit subtraction in this set of school-themed word problems!

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

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.