Enjoy helping your little counter add up the values of these coins. He'll be learning an important skill he can use every day.

Children skip count by fours to connect the dots and discover the hidden picture.

Children skip count by threes to connect the dots and discover the hidden picture.

Kids get a taste of basic algebra in this 2nd grade math worksheet. Kids flip the equations and reverse the operations in order to find the missing number.

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

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

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

Introduce your child to basic algebra with this 2nd grade math worksheet. Kids practice reverse addition or subtraction to find the missing numbers.

Kids get an intro to basic algebra by practicing reverse addition and subtraction to find the missing numbers in this challenging 2nd grade math worksheet.

Introduce your child to basic algebra with this 2nd grade math worksheet in which he'll practice reverse addition and subtraction to find the missing numbers.

This hidden animal at the Dot-to-Dot Zoo is 'hopping' to meet you. Kids will skip count by fours to reveal a hidden kangaroo.

Kids try their hand at reverse addition and subtraction in order to find the numbers missing from each equation in this 2nd grade math worksheet.

Test your addition skills in an underwater adventure with this inviting worksheet!

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

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

Use addition and subtraction to find the correct path through the puzzle.

It's almost Christmas time, and it's up to your kid to calculate the numbers of the season. Tally up the number of Christmas ornaments, candy canes, and movies.

This addition puzzle is a great math challenge. Experiment with the number combinations to find the requested sums.

Help your student learn the relationship between addition and subtraction. He'll practice finding the inverse equations of addition problems.

Two-digit addition troubling your second grader? The only way to get the concept down is practice, practice ... and more practice!

To figure out the name of the mystery super hero, your child simply needs to answer a page full of two-digit addition problems!

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.

Santa left some gifts, but they need a little color. Your child will color the gifts by number with the help of some addition and subtraction problems.

Ever jump across a stream on the rocks? How about counting by fours as you do? Skip across the rocks and learn how to count by skipping numbers.

Solve addition problems using the near-doubles method with this helpful worksheet!

Use this glossary with the EL Support Lesson Plan: Adding Within 20.

Master the make 10 strategy for solving addition problems in this helpful worksheet!