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Common Core: 1st Grade Math : Understanding and Applying Properties of Operations and the Relationship between Addition and Subtraction

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

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All Common Core: 1st Grade Math Resources

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Example Questions

Example Question #1 : Understanding And Applying Properties Of Operations And The Relationship Between Addition And Subtraction

Which math problem below equals 12+8+2? \(\displaystyle 12+8+2?\)

Possible Answers:

12+8 \(\displaystyle 12+8\)

20+4 \(\displaystyle 20+4\)

12+9 \(\displaystyle 12+9\)

20+2 \(\displaystyle 20+2\)

Correct answer:

20+2 \(\displaystyle 20+2\)

Explanation:

We can add 12+8=20 \(\displaystyle 12+8=20\). So the math problem becomes 20+2 \(\displaystyle 20+2\). Both 20+2 \(\displaystyle 20+2\) and 12+8+2 \(\displaystyle 12+8+2\) equal \(\displaystyle 22\).

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Example Question #1 : Understanding And Applying Properties Of Operations And The Relationship Between Addition And Subtraction

Which math problem below equals 3+7+9? \(\displaystyle 3+7+9?\)

Possible Answers:

10+9 \(\displaystyle 10+9\)

10+10 \(\displaystyle 10+10\)

9+12 \(\displaystyle 9+12\)

9+11 \(\displaystyle 9+11\)

Correct answer:

10+9 \(\displaystyle 10+9\)

Explanation:

We can add 7+3=10 \(\displaystyle 7+3=10\). So the math problem becomes 10+9 \(\displaystyle 10+9\). Both 10+9 \(\displaystyle 10+9\) and 3+7+9 \(\displaystyle 3+7+9\) equal \(\displaystyle 19\).

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Example Question #3 : Operations & Algebraic Thinking

Which math problem below equals 14+6+3? \(\displaystyle 14+6+3?\)

Possible Answers:

14+12 \(\displaystyle 14+12\)

14+10 \(\displaystyle 14+10\)

20+3 \(\displaystyle 20+3\)

18+3 \(\displaystyle 18+3\)

Correct answer:

20+3 \(\displaystyle 20+3\)

Explanation:

We can add 14+6=20 \(\displaystyle 14+6=20\). So the math problem becomes 20+3 \(\displaystyle 20+3\). Both 20+3 \(\displaystyle 20+3\) and 14+6+3 \(\displaystyle 14+6+3\) equal \(\displaystyle 23\).

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Example Question #1 : Common Core Math: Grade 1

Which math problem below equals 13+2+5? \(\displaystyle 13+2+5?\)

Possible Answers:

5+14 \(\displaystyle 5+14\)

15+5 \(\displaystyle 15+5\)

15+2 \(\displaystyle 15+2\)

5+20 \(\displaystyle 5+20\)

Correct answer:

15+5 \(\displaystyle 15+5\)

Explanation:

We can add 13+2=15 \(\displaystyle 13+2=15\). So the math problem becomes 15+5 \(\displaystyle 15+5\). Both 15+5 \(\displaystyle 15+5\) and 13+2+5 \(\displaystyle 13+2+5\) equal \(\displaystyle 20\).

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Example Question #2 : Operations & Algebraic Thinking

Which math problem below equals 16+2+4? \(\displaystyle 16+2+4?\)

Possible Answers:

20+4 \(\displaystyle 20+4\)

16+8 \(\displaystyle 16+8\)

16+4 \(\displaystyle 16+4\)

20+2 \(\displaystyle 20+2\)

Correct answer:

20+2 \(\displaystyle 20+2\)

Explanation:

We can add 16+4=20 \(\displaystyle 16+4=20\). So the math problem becomes 20+2 \(\displaystyle 20+2\). Both 20+2 \(\displaystyle 20+2\) and 16+2+4 \(\displaystyle 16+2+4\) equal \(\displaystyle 22\).

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Example Question #1 : Operations & Algebraic Thinking

Which math problem below equals 8+7+2? \(\displaystyle 8+7+2?\)

Possible Answers:

15+2 \(\displaystyle 15+2\)

7+11 \(\displaystyle 7+11\)

15+7 \(\displaystyle 15+7\)

7+9 \(\displaystyle 7+9\)

Correct answer:

15+2 \(\displaystyle 15+2\)

Explanation:

We can add 8+7=15 \(\displaystyle 8+7=15\). So the new math problem becomes 15+2 \(\displaystyle 15+2\). Both 15+2 \(\displaystyle 15+2\) and 8+7+2 \(\displaystyle 8+7+2\) equal \(\displaystyle 17\).

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Example Question #1 : Common Core Math: Grade 1

Which math problem below equals 8+3+2? \(\displaystyle 8+3+2?\)

Possible Answers:

10+2 \(\displaystyle 10+2\)

12+2 \(\displaystyle 12+2\)

10+3 \(\displaystyle 10+3\)

11+4 \(\displaystyle 11+4\)

Correct answer:

10+3 \(\displaystyle 10+3\)

Explanation:

We can add 8+2=10 \(\displaystyle 8+2=10\). So the new math problem becomes 10+3 \(\displaystyle 10+3\). Both 10+3 \(\displaystyle 10+3\) and 8+3+2 \(\displaystyle 8+3+2\) equal \(\displaystyle 13\).

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Example Question #1 : Common Core Math: Grade 1

Which math problem below equals 5+9+2? \(\displaystyle 5+9+2?\)

Possible Answers:

10+5 \(\displaystyle 10+5\)

15+2 \(\displaystyle 15+2\)

11+5 \(\displaystyle 11+5\)

9+2 \(\displaystyle 9+2\)

Correct answer:

11+5 \(\displaystyle 11+5\)

Explanation:

We can add 9+2=11 \(\displaystyle 9+2=11\). So the math problem becomes 11+5 \(\displaystyle 11+5\). Both 11+5 \(\displaystyle 11+5\) and 5+9+2 \(\displaystyle 5+9+2\) equal \(\displaystyle 16\).

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Example Question #2 : Common Core Math: Grade 1

Which math problem below equals 6+9+3? \(\displaystyle 6+9+3?\)

Possible Answers:

10+3 \(\displaystyle 10+3\)

16+3 \(\displaystyle 16+3\)

12+6 \(\displaystyle 12+6\)

11+6 \(\displaystyle 11+6\)

Correct answer:

12+6 \(\displaystyle 12+6\)

Explanation:

We can add 9+3=12 \(\displaystyle 9+3=12\). So the math problem becomes 12+6 \(\displaystyle 12+6\). Both 12+6 \(\displaystyle 12+6\) and 6+9+3 \(\displaystyle 6+9+3\) equal \(\displaystyle 18\).

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Example Question #4 : Operations & Algebraic Thinking

Which math problem below equals 8+2+3? \(\displaystyle 8+2+3?\)

Possible Answers:

10+3 \(\displaystyle 10+3\)

6+4 \(\displaystyle 6+4\)

12+2 \(\displaystyle 12+2\)

8+3 \(\displaystyle 8+3\)

Correct answer:

10+3 \(\displaystyle 10+3\)

Explanation:

We can add 8+2=10 \(\displaystyle 8+2=10\). So the math problem becomes 10+3 \(\displaystyle 10+3\). Both \(\displaystyle 8+2+3=13\) and 10+3=13 \(\displaystyle 10+3=13\).

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Common Core: 1st Grade Math : Understanding and Applying Properties of Operations and the Relationship between Addition and Subtraction

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

All Common Core: 1st Grade Math Resources

Example Questions

Example Question #1 : Understanding And Applying Properties Of Operations And The Relationship Between Addition And Subtraction

Example Question #1 : Understanding And Applying Properties Of Operations And The Relationship Between Addition And Subtraction

Example Question #3 : Operations & Algebraic Thinking

Example Question #1 : Common Core Math: Grade 1

Example Question #2 : Operations & Algebraic Thinking

Example Question #1 : Operations & Algebraic Thinking

Example Question #1 : Common Core Math: Grade 1

Example Question #1 : Common Core Math: Grade 1

Example Question #2 : Common Core Math: Grade 1

Example Question #4 : Operations & Algebraic Thinking

All Common Core: 1st Grade Math Resources

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