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Common Core: 1st Grade Math : Working with Addition and Subtraction Equations

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

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Example Question #41 : Understand The Equal Sign, Determine If Equations Are True Or False: Ccss.Math.Content.1.Oa.D.7

Which of the equations is TRUE?

Possible Answers:

5=15+5

5=15-5

5=15-10

5=15+1

Correct answer:

5=15-10

Explanation:

When you subtract from you get . 15-5 does not equal because 15-5=10 . 15+1 does not equal because 15+1=16 . 15+5 does not equal 5 because 15+5=20 .

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Example Question #42 : Understand The Equal Sign, Determine If Equations Are True Or False: Ccss.Math.Content.1.Oa.D.7

Which of the equations is TRUE?

Possible Answers:

9=20-1

9=2+11

9=2+1

9=20-11

Correct answer:

9=20-11

Explanation:

When you subtract form you get . 20-1 does not equal because 20-1=19 . 2+11 does not equal because 2+11=13 . 2+1 does not equal because 2+1=3 .

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Example Question #43 : Understand The Equal Sign, Determine If Equations Are True Or False: Ccss.Math.Content.1.Oa.D.7

Which of the equations is TRUE?

Possible Answers:

8=18-8

8=8+8

8=18-10

8=8+10

Correct answer:

8=18-10

Explanation:

When you subtract from you get . 18-8 does not equal because 18-8=10 . 8+10 does not equal because 8+10=18 . 8+8 does not equal because 8+8=16 .

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Example Question #44 : Understand The Equal Sign, Determine If Equations Are True Or False: Ccss.Math.Content.1.Oa.D.7

Which of the equations is TRUE?

Possible Answers:

6=10-2

6=10-4

6=10+4

6=10+2

Correct answer:

6=10-4

Explanation:

When you subtract from you get . 10-2 does not equal because 10-2=8 . 10+4 does not equal because 10+4=14 . 10+2 does not equal because 10+2=12 .

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Example Question #45 : Understand The Equal Sign, Determine If Equations Are True Or False: Ccss.Math.Content.1.Oa.D.7

Which of the equations is TRUE?

Possible Answers:

7=14+2

7=14+4

7=14-7

7=14-4

Correct answer:

7=14-7

Explanation:

When you subtract from you get . 14-4 does not equal because 14-4=10 . 14+4 does not equal because 14+4=18 . 14+2 does not equal because 14+2=16 .

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Example Question #381 : How To Subtract

Which of the equations is TRUE?

Possible Answers:

10=12-2

10=12+2

10=12+1

10=12-1

Correct answer:

10=12-2

Explanation:

When you subtract from you get . 12-1 does not equal because 12-1=11 . 12+2 does not equal because 12+2=4 .

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Example Question #41 : Working With Addition And Subtraction Equations

Which of the equations is TRUE?

Possible Answers:

9=4+5

9=4+6

9=5-4

9=6-4

Correct answer:

9=4+5

Explanation:

When you add and together you get . 4+6 does not equal because 4+6=10 . 5-4 does not equal because 5-4=1 . 6-4 does not equal because 6-4=2 .

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Example Question #47 : Understand The Equal Sign, Determine If Equations Are True Or False: Ccss.Math.Content.1.Oa.D.7

Which of the equations is TRUE?

Possible Answers:

7=5+2

7=5-2

7=6-2

7=6+2

Correct answer:

7=5+2

Explanation:

When you add and you get . 6+2 does not equal because 6+2=8 . 5-2 does not equal because 5-2=3 . 6-2 does not equal because 6-2=4 .

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Example Question #1161 : Operations

Which of the equations is TRUE?

Possible Answers:

6=4+3

6=3+3

6=4-3

6=3-3

Correct answer:

6=3+3

Explanation:

When you add and together you get . 4+3 does not equal because 4+3=7 . 3-3 does not equal because 3-3=0 . 4-3 does not equal because 4-3=1 .

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Example Question #49 : Understand The Equal Sign, Determine If Equations Are True Or False: Ccss.Math.Content.1.Oa.D.7

Which of the equations is TRUE?

Possible Answers:

5=3+1

5=3-2

5=3-1

5=2+3

Correct answer:

5=2+3

Explanation:

When you add and you get . 3+1 does not equal because 3+1=4 . 3-2 does not equal because 3-2=1 . 3-1 does not equal because 3-1=2 .

Report an Error

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Common Core: 1st Grade Math : Working with Addition and Subtraction Equations

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

All Common Core: 1st Grade Math Resources

Example Questions

Example Question #41 : Understand The Equal Sign, Determine If Equations Are True Or False: Ccss.Math.Content.1.Oa.D.7

Example Question #42 : Understand The Equal Sign, Determine If Equations Are True Or False: Ccss.Math.Content.1.Oa.D.7

Example Question #43 : Understand The Equal Sign, Determine If Equations Are True Or False: Ccss.Math.Content.1.Oa.D.7

Example Question #44 : Understand The Equal Sign, Determine If Equations Are True Or False: Ccss.Math.Content.1.Oa.D.7

Example Question #45 : Understand The Equal Sign, Determine If Equations Are True Or False: Ccss.Math.Content.1.Oa.D.7

Example Question #381 : How To Subtract

Example Question #41 : Working With Addition And Subtraction Equations

Example Question #47 : Understand The Equal Sign, Determine If Equations Are True Or False: Ccss.Math.Content.1.Oa.D.7

Example Question #1161 : Operations

Example Question #49 : Understand The Equal Sign, Determine If Equations Are True Or False: Ccss.Math.Content.1.Oa.D.7

All Common Core: 1st Grade Math Resources

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