Invite your first grader to enter the world of the teen numbers as she starts writing 11-20. Practice tracing the name of each number before writing it.

Is your child ready for a parade of practice activities? They'll have some brightly colored fun as they explore writing and recognizing numbers 11-20.

So your child has mastered the numbers 1-10 -- what's next? How about a bright and colorful number pyramid that challenges them to tackle numbers 11-20?

The second in a series of six, this addition worksheet gives learners more practice composing numbers 11–19!

Master the math of making 10 and 20 with two addends in this helpful addition worksheet!

Subtract numbers within 20 using ten frames with this first-grade math worksheet!

This automobile-themed worksheet helps students practice counting the numbers 11–20.

How do you make learning addition and subtraction facts fun? Try your hand at "popping" colorful balloons showing a sum or difference of eleven!

Add numbers within 20 using ten frames with this first-grade math worksheet!

The 11s times tables are fairly simple. Review the pattern for 11s, and then learn a cool new strategy for multiplying bigger numbers by 11!

This summer, try building subtraction skills, not just sandcastles!

It's time to check those addition skills! Use this to assess your student’s abilities to add within 20.

Give your young math learner practice composing numbers 11–19 with this addition strategies worksheet!

Assess your students’ understanding of subtraction by having them solve subtraction problems within 20.

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

Let's check in on those subtraction skills! Use this math worksheet to assess your students’ understanding of subtraction by having them solve subtraction problems within 20.