Children practice writing numbers from expanded forms, and expanded forms from numbers.

Use this visual model to practice adding 10 to two-digit numbers!

Sharpen second graders' hundred chart know-how with this addition worksheet!

Test your addition skills with this helpful hundred chart worksheet!

Practice multi-digit addition with this hundred chart worksheet for second graders! 

Explore finding missing starting numbers in addition equations with this engaging hundred-chart worksheet!

Hurry! If these numbers aren't added quickly using regrouping, they'll pop!

Children practice finding the sum of two three-digit whole numbers, with no regrouping, in this math worksheet.

Kids help Olga the Octopus on this second grade math worksheet by solving subtraction problems with two-digit numbers using regrouping.

First and second graders will LOVE finding the missing numbers in this adorable Valentine’s Day math puzzle!

Discover combinations that make 10 with this engaging cut-and-paste worksheet, designed for first and second graders!

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

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

Strengthen first and second graders' single-digit addition skills with this hands-on worksheet!

Practice addition while solving number puzzles in this engaging worksheet for first and second graders!

Mastering subtraction is a lot like mastering baseball - it takes practice. Students can practice their subtraction skills by using the regrouping method.

Get on a roll with your addition skills in this engaging worksheet!

Get ready for a deep dive into the properties of addition with this first- and second-grade worksheet!

Put your addition skills to the test with these puzzle boxes for second and third graders!

Put your addition skills to the test with these puzzle boxes for second and third graders!

Add a fun twist to math practice with these second- and third-grade addition puzzles!

Put your addition skills to the test with these puzzle boxes for second and third graders! 

Use your addition expertise to find the missing digits in each equation with this second- and third-grade worksheet!

Put your addition skills to the test with these puzzle boxes for second and third graders!

Addition doesn't have to be puzzling—practice finding sums with these puzzle boxes!

Shape up your addition skills with these square puzzles!

Addition doesn't have to be puzzling—practice finding sums with these second- and third-grade puzzle boxes!

Bolster your third grader's addition skills with at-home practice in three-digit addition.

Students solve addition problems with two-digit addends and no regrouping on this fruit-themed worksheet.