Common Core: 1st Grade Math : Adding and Subtracting Within 20

Study concepts, example questions & explanations for Common Core: 1st Grade Math

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Example Questions

Example Question #158 : Operations & Algebraic Thinking

Possible Answers:

Correct answer:

Explanation:

To subtract we can count backwards. Start at  and count back .

Example Question #159 : Operations & Algebraic Thinking

Possible Answers:

Correct answer:

Explanation:

To subtract we can count backwards. Start at  and count back .

Example Question #160 : Operations & Algebraic Thinking

Possible Answers:

Correct answer:

Explanation:

To subtract we can count backwards. Start at  and count back .

Example Question #611 : How To Subtract

Possible Answers:

Correct answer:

Explanation:

To subtract we can count backwards. Start at  and count back .

Example Question #612 : How To Subtract

Possible Answers:

Correct answer:

Explanation:

To subtract we can count backwards. Start at  and count back .

Example Question #613 : How To Subtract

Possible Answers:

Correct answer:

Explanation:

To subtract we can count backwards. Start at  and count back .

Example Question #614 : How To Subtract

Possible Answers:

Correct answer:

Explanation:

To subtract we can count backwards. Start at  and count back .

Example Question #611 : Operations

Possible Answers:

Correct answer:

Explanation:

To subtract we can count backwards. Start at  and count back .

Example Question #831 : Numbers And Operations

Possible Answers:

Correct answer:

Explanation:

To subtract we can count backwards. Start at  and count back .

Example Question #612 : Operations

Possible Answers:

Correct answer:

Explanation:

To subtract we can count backwards. Start at  and count back .

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