Common Core 1.OA.6
Add and subtract within 20, demonstrating fluency within 10.
Doubles to 20
1st Grade · Math
4 versions
Make 20
1st Grade · Math
6 versions
Take From 20
1st Grade · Math
6 versions
Addition Within 20
1st Grade · Math
8 versions
Subtract Within 20
1st Grade · Math
8 versions
Addition Review: Within 10
1st Grade · Math
8 versions
Subtraction Review: Within 10
1st Grade · Math
8 versions
What 1.OA.6 covers
Add and subtract within 20, demonstrating fluency within 10. This Common Core standard sits in the Operations & Algebraic Thinking domain for 1st Grade. Below are 7 free, printable worksheets that give kids targeted practice on this exact skill, each with a free answer key.
How to use these worksheets
Print a set for homework or classroom practice. Each worksheet comes in multiple versions, so children can repeat the same skill with fresh questions until it sticks.