This activity will help students reflect on the many potential combinations for a number as they work on identifying a missing part of a whole using dots and a word bank.

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.

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.

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 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.

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

Gain expertise with addition sentences within 20 in this helpful math worksheet!

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

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

Test your addition skills with this hands-on math worksheet!

Test your addition skills with this helpful hundred chart worksheet!

First and second graders will LOVE finding the missing numbers in this adorable Valentine’s Day math puzzle!

These Christmas presents are missing some color! Challenge your second grader to review addition and subtraction facts by solving the equations in these gifts.

These Christmas presents are missing some color! Challenge your child to review her addition and subtraction math facts by solving the equations in these gifts.

Master two-digit addition with the help of place value charts!

There’s value in adding with place value! Practice using place value charts in this charming second-grade worksheet!

Here's one way to reinforce addition facts and basic math vocabulary. Your child can add up the numbers and fill in missing signs in these addition problems.

Do some Christmas coloring in this addition and subtraction math worksheet. Kids will fill in missing colors in Santa's presents as they solve math problems.

Practice using place value to solve addition problems with this math worksheet!

There are 10 gifts under the Christmas tree, but they're missing their colors. Your child will use his math and creative skills to color them in this worksheet.

Get ready for a deep dive into the properties of addition with this first- and second-grade worksheet!

Start your engines and rush toward the finish line in this engaging addition worksheet!

Climb toward the sum by making tens in this helpful addition worksheet!

Shape up your addition skills with these square puzzles!

Is your child comfortable with adding double-digit numbers? If he's getting there here's a different take on addition problems!

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