Common Core math · Grade 2 · Operations & Algebraic Thinking

2.OA.B.2

Know addition and subtraction facts within 20 by heart.

What 2.OA.B.2 says

Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.

Grade: Grade 2
Domain: OA — Operations & Algebraic Thinking
Full code: CCSS.MATH.CONTENT.2.OA.B.2

Free worksheets for 2.OA.B.2

57 aligned worksheets — showing 24. Every one is a free printable PDF. No account, no email, no paywall.

More free Grade 2 math

Other Grade 2 standards

2.OA.A.1 2.OA.C.3 2.OA.C.4 2.NBT.A.1 2.NBT.A.2 2.NBT.A.4

2.OA.B.2 — common questions

What is 2.OA.B.2?

2.OA.B.2 is a Grade 2 Common Core math standard in the Operations & Algebraic Thinking domain. It reads: “Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.”

What grade is 2.OA.B.2?

2.OA.B.2 is a Grade 2 standard. The number straight after the domain letters is the grade, so the “2” in 2.OA.B.2 means Grade 2.

What does the code 2.OA.B.2 stand for?

Read it left to right: 2 is the grade, OA is the domain (Operations & Algebraic Thinking), and the last number is the standard within that domain. The full identifier is CCSS.MATH.CONTENT.2.OA.B.2.

Are there free worksheets for 2.OA.B.2?

Yes — 57 printable worksheets on this page are aligned to 2.OA.B.2. Every one is a free PDF with no account, no email and no paywall.