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?

Measure your way to the right answer by using this handy number line to solve word problems about adding length.

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.

Can your kid solve these multiple-step word problems by using a number line? Let her take a crack at it and see how well she does!

Don’t worry, going batty is a good thing with this color-by-number addition worksheet!

This word problem worksheet will help your child learn how to solve math problems by measuring values on a number line.

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!

Double the numbers equals double the fun! Practice adding with near-doubles in this engaging math worksheet.

Treasure your addition skills as you finish number bonds in this festive worksheet!

Make math fun with this doubles facts maze! 

Solve an enjoyable maze of doubles facts with this fun one-page worksheet!

Strengthen your learners' addition and subtraction skills using number line models and real-world scenarios!

Lengthen your learners' addition and subtraction skills using number line models and real-world scenarios!

Enhance your learners' addition and subtraction skills using number line models and real-world scenarios!

Boost your learners' addition and subtraction skills using number line models and real-world scenarios!

Invite your child to imagine that he is a car moving along a number line. Use this math worksheet to help your 2nd grader identify numbers, add, and subtract.

Jump forward and backward on a number line to solve addition problems in this engaging worksheet!

Practice three-digit addition using open number lines with this second-grade math worksheet!

Get more practice performing three-digit addition using open number lines with this second-grade math worksheet!

Get even more practice performing three-digit addition using open number lines with this second-grade math worksheet!

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

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

Determine doubles with dots on dominoes in this delightful worksheet!

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

Ever jump across a stream on the rocks? How about counting by fours as you do? Skip across the rocks and learn how to count by skipping numbers.

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

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.

Practice identifying doubles facts with this appealing worksheet!

Go on a number adventure with this jungle-themed worksheet. Kids will use their number know-how to order numbers and clear a path through the jungle.