Strengthen your second grader's ability to tackle his addition facts by adding up the number strings, and uncover a fun fact when he's finished.

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.

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

Use these vocabulary cards with the EL Support Lesson Plan: Adding Within 20.

Practice a helpful strategy for adding single-digit numbers in this worksheet, the second entry in a scaffolded series!

Not only does this worksheet bolster kids' addition skills, it's a great mental math exercise, too.

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

Can your second grader dig a little deeper into number comparisons? Have her find the missing number that makes each "greater than" equation true.

Practice adding doubles with this colorful 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.

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

Use your addition skills to build your own number city in this unique worksheet!

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

Practice addition while solving number puzzles in this engaging worksheet for first and second graders!

Let the construction begin! Learners will use number sentences to make buildings in this inviting addition worksheet!

Looks like Santa has been here! These Christmas gifts each have an addition or subtraction problem for your second grader to solve.

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

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

Master making ten to help you solve addition problems in this helpful worksheet!

This worksheet is a fun way to practice skip counting by nine, addition facts, and number sense skills.

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.

This worksheet is a fun way to practice skip counting by seven, addition facts, and number sense skills.

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

Count by lucky number seven! This coloring page dot-to-dot provides unexpected math practice with a fun activity.

Add some color to these Christmas presents in this color-by-number mental math worksheet. Kids will exercise addition and subtraction skills.

Make the math concept "less than" more clear with a colorful worksheet that gets him practicing with number comparisons to make each equation true.

This Christmas color-by-number worksheet gives kids the added challenge of solving math problems. Practice math and creativity with this Christmas worksheet.

Practice multi-digit addition with this hundred chart worksheet for second graders!