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.

Help your child practice his counting skills with this printable kindergarten worksheet, which focuses on the numbers 11 through 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?

Numbers 1-20 can be as easy as 1-2-3! Assess your students’ understanding of numbers 1 to 20 using this handy worksheet.

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

How about some hamburgers? Kids can trace number 20, and practice their counting skills with up to 20 hamburgers!

Here's a fun coloring activity to help your kindergartener recognize the number 11. Can he find the rabbits with 11 on them and count them up?

Get more practice writing addition equations within 20 with this inviting and accessible math worksheet!

Get more practice with addition facts within 20 with this colorful kindergarten math worksheet!

Learners will solve 20 two- and three-digit addition problems in this versatile practice worksheet.

Here's a writing and counting activity to introduce your kindergartener to two-digit numbers. She can trace 11 and say her numbers out loud!

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!

Get to know the Apollo 11 space mission in this science and history worksheet!

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 a wonderful day for sailing! For this kindergarten math worksheet, kids color and count just the sailboats with the number 11.

Addition and building go hand in hand. Show your little math whiz the basics of addition with this picture math worksheet.

Would you believe this cut-out will actually fold into a city building? Share a fun paper project with your child, building your own paper city!

On this kindergarten math worksheet, kids trace the number 11, then write their own. Then they count delicious pears and record the information in a graph.

Practice adding 3 to numbers within 10 with this first-grade addition worksheet!

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

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

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

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

Find the number 20 among this brood of turkeys down on the farm!