✏️ Add and Subtract Within 20: Practice A (1.OA.C.6)

Worksheets › Grade 1 Math › Add and Subtract Within 20 › Add and Subtract Within 20

About this grade 1 worksheet

Free Grade 1 math worksheet (Common Core 1.OA.C.6): add and subtract within 20 — twelve practice problems, with answer key. Skill: Add and subtract within 20, using strategies such as making ten. Level: Grade 1 — also suits Year 2 (UK).

For teachers: skills & standards

• CCSS 1.OA.C.6: Add and subtract within 20, with fluency within 10
• Works as a morning-work page, a centre/station activity, homework or an early-finisher task.

Frequently asked questions

Is this worksheet free?

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What age is it for?

It is designed for Grade 1 (ages 6–7), but use it with any child who is ready.

What skills does it build?

Add and subtract within 20, using strategies such as making ten.

Where can I find grade 1 books to read with it?

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More “Add and Subtract Within 20” printables (1.oa.c.6: add and subtract within 20, using strategies such as making ten)

Add and Subtract Within 20: Practice B (1.OA.C.6) · Add and Subtract Within 20: Word Problems (1.OA.C.6) · Add and Subtract Within 20: Show Your Thinking (1.OA.C.6) · Add and Subtract Within 20: Quick Check (1.OA.C.6)

All 5 add and subtract within 20 sheets → · Grade 1 Math: all 10 skills → · All Common Core grades

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