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

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.

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.

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.

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

Learn how to use doubles facts to solve other addition problems!

Test your addition skills with this helpful hundred chart worksheet!

Find friends in trusty tens with this colorful addition worksheet!

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

Use problem solving and critical thinking skills to find different sums in these puzzles.

Practice using repeated addition to find the total number of objects in equal groups.

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

Practice using place value charts to find sums with this addition worksheet for first and second graders!

Help the frog find its way to the pond with this addition worksheet for first and second graders!

Learners will determine the rule for each sequence to find the missing numbers in this engaging math puzzle.

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

This math worksheet tests your child's addition and riddle-solving skills. Find out the answer to the riddle, "Which month has 28 days?"

Why was 6 afraid of 7? 7 8 9 (seven ate nine)! Find more funny riddles to solve with this awesome addition worksheet.

Count like a champ! Your kid will find missing numbers in no time when he learns how to use a number line. Now get searching!

To determine this hero's mystery code name, your second grader needs to find the answers to this page full of two-digit addition problems.

What is a math teacher's favorite dessert? Pi! Find more funny riddles by doing this worksheet--a perfect combination of math practice and brain teasers.