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

Practice fluency by building a flourishing city in this second-grade worksheet!

Master two-digit addition in this second-grade worksheet!

Construct your own math city with number sentences in this colorful second-grade worksheet!

Construct a colorful city with this engaging second-grade addition worksheet!

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

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

Work on addition while finding sums of 100 using a deck of playing cards and this first grade math worksheet.

Use critical thinking skills and a bit of addition to find the correct numbers and fill in this second grade worksheet.

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

Sharpen your single-digit addition skills with this helpful first- and second-grade worksheet!

These Halloween word problems get your child in a frightful mood for All Hallows' Eve. Help your child practice some Halloween math with these word problems.

Introduce your child to basic algebra with this 2nd grade math worksheet. Kids practice reverse addition or 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 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 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 solve addition problems with two-digit addends to move from ice chunk to ice chunk and help Polly get to her cub on this second grade math worksheet.

Construct a thriving metropolis with this colorful addition worksheet for second graders!

Is your second grader struggling with two-digit addition? This super hero worksheet should motivate him to practice math!

Practice addition with your second grader, a math worksheet, and a deck of playing cards.

Has your second grader ever wanted to play super hero? Let him do just that with this two-digit addition worksheet.

Want an entertaining way to boost your second grader's math skills? This addition worksheet--embellished with a powerful super hero--does the trick!

Use math to construct a thriving city in this colorful worksheet for second graders!

Build a mathematical metropolis with this fun worksheet for second graders!

Get more practice balancing addition and subtraction equations with this lower grades math worksheet!

Help first and second graders practice solving near-doubles facts using this fun worksheet!

Get even more fun practice balancing addition and subtraction equations with this lower grades math worksheet!

To complete this adorable worksheet, have your second grader re-write each addition equation vertically and then solve using regrouping.

Guide your second grader through this fun, two-digit addition worksheet to boost her mental math skills.