Use this number line as a tool to practice adding and subtracting within 20.

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

Does your little mathematician enjoy the pop of a good balloon? In this sheet, he'll 'pop' balloons that contain addition or subtraction problems that equal 20.

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

Master subtraction under 20 with this bright, inviting practice sheet!

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.

It's time to check in on those subtraction skills! Use this to assess your student’s abilities to subtract within 20.

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

Practice addition and subtraction within 20 with this sweet Valentine’s Day math puzzle!

Use these fun fruit and vegetable themed math problems to assess your students’ ability to solve subtraction problems within 20.

Learners practice addition and subtraction within 20 in this St. Patrick's Day-themed math puzzle!

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

Identify numbers that are one less than another number with this kindergarten worksheet!

Travel through the hundreds chart on a quest to one.

Use this glossary with the EL Support Lesson: One Less.

Help kids grasp the concept of subtraction by taking one away in this worksheet.

Practice finding numbers that are one less with this hands-on worksheet!

Use these vocabulary cards with the EL Support Lesson: One Less.

Give math skills a workout with this race against the clock! This worksheet of subtraction problems should be worked on for just one minute.

Go full speed ahead with your subtraction skill in this engaging math worksheet!

Follow fluency facts to finish this fun first- and second-grade subtraction maze!

Let this first- and second-grade subtraction worksheet serve as the cherry on top of your fluency practice!

How well do you know your basic subtraction facts? Test your knowledge in this worksheet!

Practice subtraction within 20 with this Halloween math workheet!

Practice subtraction within 20 with this Halloween math workheet!