1.OA.C.6 — Free Activities & Worksheets

Free Common Core 1.OA.C.6 activities and worksheets for Grade 1, aligned to the Operations & Algebraic Thinking strand. Browser-playable interactive exercises plus printable PDFs, available in all 11 supported languages — no signup, no paywall.

Grade 1·Operations & Algebraic Thinking·1.OA.C.6

Interactive activities

Grade 1·1.OA.C.6

Make a Ten to Add — Addition Within 20 (Grade 1)

A free interactive Grade 1 math activity: add within 20 with the make-a-ten strategy. For a sum like 8 + 5, break the 5 on a number bond so one part makes 10 with the 8 (8 + 2 = 10), then add what's left (10 + 3 = 13). Tap to fill the make-a-ten part. Common Core 1.OA.C.6.

Try it
Grade 1·1.OA.C.6

Lily's Ten Stones — Make a Ten to Add & Subtract

Help Lily the frog cross the pond on the number line: to add or subtract past ten, first hop to the golden Ten Stone, then the rest. Build the make-a-ten part yourself — 8 + 2 makes 10, then 10 + 4 is 14. A strategy game, not a speed drill. Common Core 1.OA.C.6.

Try it

Printable worksheets for this standard

Related standards in 1.OA

Frequently asked questions

What is covered under 1.OA.C.6?
1.OA.C.6 sits in the Operations & Algebraic Thinking strand for Grade 1. This page gathers the free interactive activities and worksheets aligned to it.
Are these 1.OA.C.6 resources free?
Yes. Every activity and worksheet aligned to 1.OA.C.6 is free to use online and to print — no signup and no paywall.
Who are these 1.OA.C.6 activities for?
They are built for Grade 1 teachers and learners following the Common Core Operations & Algebraic Thinking progression, and work for class, small-group, or home practice.