Estimate the sum in each of these math problems. Challenge your child to round to the nearest hundred first, then add the two rounded numbers.

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

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

Use a visual model to solve these two-digit addition problems!

Bolster your knowledge of the associative property of addition in this charming worksheet!

Practice adding multi-digit numbers in this second- and third-grade worksheet!

Test your talent in two-digit addition with this colorful math worksheet!

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!

Test your addition skills with this helpful hundred chart worksheet!

Master two-digit addition with these hundred chart problems!