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.

Write numbers in standard form based on nontraditional expanded form with this helpful worksheet!

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

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.

Ask your kindergartener to complete these one-digit subtraction facts, and they'll go above and beyond kindergarten standards in no time!

Challenge growing fourth-grade mathematicians with this expanded notation worksheet! 

Turn words into numbers in this colorful math worksheet!

Practice finding the expanded form of numbers with this inviting worksheet!

Challenge your third grader to match up each metric unit of measurement with the U.S. version in this colorful worksheet.

Test your knowledge of numbers and words with this engaging fourth-grade worksheet!

Work on your word form skills in this colorful, inviting worksheet!

Kids completing this third grade math worksheet multiply by 1 to solve each equation and also fill in a multiplication chart for the number 1.

Practice adding one to numbers within 10 with this first-grade addition worksheet!

Travel through the hundreds chart on a quest to one.

One more vegetable! This worksheet will have your students figuring out what happens when you add one more vegetable to the existing list.

In this worksheet, students will identify, count, and order numbers from 1-10 in order to gain a better understanding of one-to-one correspondence between numbers and pictures.

Use this glossary with the EL Support Lesson: One Less.

This discussion guide helps readers reflect on chapters 1–38 of The One and Only Ivan.

Ready to add some magic to the standard creative writing process?

Give your first grader's math skills a boost with this delightful worksheet that asks them to complete a collection of one-digit addition problems.

Help kids grasp the concept of subtraction by taking one away in this worksheet.

Learn the number 1 with this early math worksheet!

Children practice their one-digit multiplication facts with this fall-themed math worksheet.

Practice writing numbers in standard, expanded, and word forms with this fill-in-the-blank worksheet!

Find the answers to 16 one- and two-digit division problems in this playful holiday worksheet!

Children practice their one- and two-digit division facts with this fall-themed math worksheet.

Which one is longer? Practice quantifying things in measurements using this beginner's worksheet!

This fun fraction worksheet introduces kids to the fraction 1/3.

Use these vocabulary cards with the EL Support Lesson: One Less.

Use this glossary with the EL Support Lesson: One More Please!