These equations have lost their signs! Only one sign — plus or minus — can make each equation true.

Let’s see how well you know your addition facts!

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

Help Santa color his gifts. With some math know-how and a few festive crayons, your child just might save Christmas.

Know a second grader who could use stronger math skills? Give her a helping hand with this super power-infused, two-digit addition worksheet.

Kids practice reverse addition and subtraction to find the missing numbers in this challenging 2nd grade math worksheet.

Swing through the trees like Tarzan! Count by 12 as you swing from tree to tree, a great way to learn the basics of multiplication.

Don't get spooked out by math! These Halloween word problems bring some scary fun to your math exercises.

Add some color to these Christmas presents in this color-by-number mental math worksheet. Kids will exercise addition and subtraction skills.

Your young learner can have a blast experimenting with addition facts in the Math Lab!

Your child can exercise addition and subtraction skills at Christmas time with this mental math worksheet. It also includes a bonus coloring exercise.

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