Common Core: 2nd Grade Math : Mentally Add and Subtract Within 20: CCSS.Math.Content.2.OA.B.2

Study concepts, example questions & explanations for Common Core: 2nd Grade Math

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Example Questions

Example Question #321 : Operations & Algebraic Thinking

Possible Answers:

Correct answer:

Explanation:

To add we count up. Start at  and count up .

Example Question #322 : Operations & Algebraic Thinking

Possible Answers:

Correct answer:

Explanation:

To add we count up. Start at  and count up .

Example Question #323 : Operations & Algebraic Thinking

Possible Answers:

Correct answer:

Explanation:

To add we count up. Start at  and count up .

Example Question #324 : Operations & Algebraic Thinking

Possible Answers:

Correct answer:

Explanation:

To add we count up. Start at  and count up .

Example Question #325 : Operations & Algebraic Thinking

Possible Answers:

Correct answer:

Explanation:

To add we count up. Start at  and count up .

Example Question #326 : Operations & Algebraic Thinking

Possible Answers:

Correct answer:

Explanation:

To add we count up. Start at  and count up .

Example Question #327 : Operations & Algebraic Thinking

Possible Answers:

Correct answer:

Explanation:

To add we count up. Start at  and count up .

Example Question #328 : Operations & Algebraic Thinking

Possible Answers:

Correct answer:

Explanation:

To add we count up. Start at  and count up .

Example Question #329 : Operations & Algebraic Thinking

Possible Answers:

Correct answer:

Explanation:

To add we count up. Start at  and count up .

Example Question #330 : Operations & Algebraic Thinking

Possible Answers:

Correct answer:

Explanation:

To add we count up. Start at  and count up .

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