Complete the number sentence by counting left and right on a number line. Can your child find all the missing numbers?

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

Did you know that multiplying a number by two is the same thing as adding that number to itself? Use this trick in this lovely math worksheet.

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.

One way to find the missing number in an equation is to use a number line. Your kid will do just that in this set of addition problems.

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.

The princess needs saving from the castle! In order to reach her, practice counting by 8 as you skip down the stone path.

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.

Your child will figure out the number pattern and further develop the problem solving skills needed for multiplication.

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!