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 #1812 : Numbers And Operations

Possible Answers:

Correct answer:

Explanation:

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

Example Question #751 : How To Add

Possible Answers:

Correct answer:

Explanation:

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

Example Question #1600 : Operations

Possible Answers:

Correct answer:

Explanation:

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

Example Question #1601 : Operations

Possible Answers:

Correct answer:

Explanation:

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

Example Question #1602 : Operations

Possible Answers:

Correct answer:

Explanation:

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

Example Question #1821 : Numbers And Operations

Possible Answers:

Correct answer:

Explanation:

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

Example Question #1821 : Numbers And Operations

Possible Answers:

Correct answer:

Explanation:

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

Example Question #421 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

Possible Answers:

Correct answer:

Explanation:

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

Example Question #1606 : Operations

Possible Answers:

Correct answer:

Explanation:

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

Example Question #1607 : Operations

Possible Answers:

Correct answer:

Explanation:

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

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