Children practice addition within 20 in this fall-themed math worksheet.

Children practice subtraction within 20 in this fall-themed math worksheet.

Children practice addition within 20 in this fall-themed math worksheet.

Children practice subtraction within 20 in this fall-themed math worksheet.

Children practice subtraction within 20 in this fall-themed math worksheet.

Children practice subtraction within 20 in this fall-themed math worksheet.

Step on the gas and solve these problems as quickly as you can in this inviting subtraction worksheet!

Shoot for success in this basketball-themed addition worksheet!

Children practice subtraction within 20 in this fall-themed math worksheet.

Get familiar with doubles fact families in this charming first-grade worksheet!

Young entrepreneurs Sam, Kate, and Becky sold some ice cream cones, but they need help figuring out how many. Exercise pictograph skills in this worksheet.

Have an undersea adventure with your kid, as he orders numbers from big to small. Swim through the coral reef to order three-digit numbers with your little one.

Who knew counting practice could be such an adventure? Your first grader will practice ordering numbers and skip counting as she dodges obstacles in the cave.

Challenge your child's skip-counting skills with this Christmas number adventure! He'll fill in the missing numbers in each pattern.

Challenge your child will this mathematical pattern worksheet. Your Easter-enthused child will add missing numbers to complete the number pattern.

Learners will take on 20 one-digit addition problems in this sweet springtime worksheet.

Can your first grader do some counting to help deliver these Valentine notes? Help him practice sequencing numbers with this activity.

Get on a roll with your addition skills in this engaging worksheet!

Get more practice decomposing numbers and writing equations with this inviting math worksheet!

Practice addition under 20 with visual models in this useful math worksheet!

What do the numbers 11 through 19 have in common? This math and patterns worksheet features a number chart to help your kid learn how to recognize patterns.

In this football-themed subtraction worksheet, the real trophy is the subtraction mastery you gained along the way!

You'll go nuts after sharpening your subtraction skills with this acorn-themed activity for first-grade students!

Subtract with tasty treats in this first-grade number bond worksheet!

Try your luck at solving subtraction in this helpful number bond worksheet!

Sneak time practice into play time with these bright and colorful play paper watches.

Engage young learners with this fun math maze featuring addition and subtraction facts within 20!

Students solve problems to figure out 10 less than numbers less than 20.

Count, add, and compose numbers under 20 in this colorful first-grade worksheet!