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Common Core: 1st Grade Math : Find the Missing Number in Addition and Subtraction Equations: CCSS.MATH.CONTENT.1.OA.D.8

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 #672 : Operations & Algebraic Thinking

Fill in the blank.

$\displaystyle 3+$ __________ $\displaystyle =5$

Possible Answers:

$\displaystyle 4$

$\displaystyle 2$

$\displaystyle 0$

$\displaystyle 1$

$\displaystyle 3$

Correct answer:

$\displaystyle 2$

Explanation:

To find the missing piece of an addition problem, you can take the biggest number minus the smallest number. 5-3=2 $\displaystyle 5-3=2$ , which means 3+2=5 $\displaystyle 3+2=5$ .

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Example Question #671 : Operations & Algebraic Thinking

Fill in the blank.

$\displaystyle 4+$ __________ =12 $\displaystyle =12$

Possible Answers:

$\displaystyle 8$

$\displaystyle 6$

$\displaystyle 5$

$\displaystyle 9$

$\displaystyle 7$

Correct answer:

$\displaystyle 8$

Explanation:

To find the missing piece of an addition problem, you can take the biggest number minus the smallest number. 12-4=8 $\displaystyle 12-4=8$ , which means 4+8=12 $\displaystyle 4+8=12$ .

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Example Question #161 : Working With Addition And Subtraction Equations

Fill in the blank.

$\displaystyle 5+$ __________ $\displaystyle =8$

Possible Answers:

$\displaystyle 0$

$\displaystyle 1$

$\displaystyle 3$

$\displaystyle 2$

$\displaystyle 4$

Correct answer:

$\displaystyle 3$

Explanation:

To find the missing piece of an addition problem, you can take the biggest number minus the smallest number. 8-5=3 $\displaystyle 8-5=3$ , which means 5+3=8 $\displaystyle 5+3=8$ .

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Example Question #91 : Find The Missing Number In Addition And Subtraction Equations: Ccss.Math.Content.1.Oa.D.8

Fill in the blank.

$\displaystyle 6+$ __________ =12 $\displaystyle =12$

Possible Answers:

$\displaystyle 7$

$\displaystyle 5$

$\displaystyle 6$

$\displaystyle 9$

$\displaystyle 8$

Correct answer:

$\displaystyle 6$

Explanation:

To find the missing piece of an addition problem, you can take the biggest number minus the smallest number. 12-6=6 $\displaystyle 12-6=6$ , which means 6+6=12 $\displaystyle 6+6=12$ .

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Example Question #91 : Find The Missing Number In Addition And Subtraction Equations: Ccss.Math.Content.1.Oa.D.8

Fill in the blank.

$\displaystyle 9+$ __________ =19 $\displaystyle =19$

Possible Answers:

$\displaystyle 11$

$\displaystyle 10$

$\displaystyle 12$

$\displaystyle 9$

$\displaystyle 8$

Correct answer:

$\displaystyle 10$

Explanation:

To find the missing piece of an addition problem, you can take the biggest number minus the smallest number. 19-9=10 $\displaystyle 19-9=10$ , which means 9+10=19 $\displaystyle 9+10=19$ .

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Example Question #671 : Common Core Math: Grade 1

Fill in the blank.

$\displaystyle 1+$ __________ = 4 $\displaystyle = 4$

Possible Answers:

$\displaystyle 2$

$\displaystyle 3$

$\displaystyle 4$

$\displaystyle 5$

$\displaystyle 1$

Correct answer:

$\displaystyle 3$

Explanation:

To find the missing piece of an addition problem, you can take the biggest number minus the smallest number . 4-1=3 $\displaystyle 4-1=3$ , which means 1+3=4 $\displaystyle 1+3=4$ .

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Example Question #91 : Find The Missing Number In Addition And Subtraction Equations: Ccss.Math.Content.1.Oa.D.8

Fill in the blank.

10+ $\displaystyle 10+$ __________ =18 $\displaystyle =18$

Possible Answers:

$\displaystyle 9$

$\displaystyle 7$

$\displaystyle 8$

$\displaystyle 5$

$\displaystyle 6$

Correct answer:

$\displaystyle 8$

Explanation:

To find the missing piece of an addition problem, you can take the biggest number minus the smallest number. 18-10=8 $\displaystyle 18-10=8$ , which means 10+8=18 $\displaystyle 10+8=18$ .

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Example Question #167 : Working With Addition And Subtraction Equations

Fill in the blank.

11+ $\displaystyle 11+$ __________ =20 $\displaystyle =20$

Possible Answers:

$\displaystyle 10$

$\displaystyle 12$

$\displaystyle 9$

$\displaystyle 8$

$\displaystyle 11$

Correct answer:

$\displaystyle 9$

Explanation:

To find the missing piece of an addition problem, you can take the biggest number minus the smallest number. 20-11=9 $\displaystyle 20-11=9$ , which means 11+9=20 $\displaystyle 11+9=20$ .

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Example Question #171 : Working With Addition And Subtraction Equations

Fill in the blank.

14+ $\displaystyle 14+$ __________ =19 $\displaystyle =19$

Possible Answers:

$\displaystyle 6$

$\displaystyle 5$

$\displaystyle 3$

$\displaystyle 2$

$\displaystyle 7$

Correct answer:

$\displaystyle 5$

Explanation:

To find the missing piece of an addition problem, you can take the biggest number minus the smallest number. 19-14=5 $\displaystyle 19-14=5$ , which means 14+5=19 $\displaystyle 14+5=19$ .

Report an Error

Example Question #93 : Find The Missing Number In Addition And Subtraction Equations: Ccss.Math.Content.1.Oa.D.8

Fill in the blank.

$\displaystyle 1+$ __________ $\displaystyle =3$

Possible Answers:

$\displaystyle 2$

$\displaystyle 0$

$\displaystyle 3$

$\displaystyle 1$

$\displaystyle 4$

Correct answer:

$\displaystyle 2$

Explanation:

To find the missing piece of an addition problem, you can take the biggest number minus the smallest number. 3-1=4 $\displaystyle 3-1=4$ , which means 1+2=3 $\displaystyle 1+2=3$ .

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All Common Core: 1st Grade Math Resources

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Common Core: 1st Grade Math : Find the Missing Number in Addition and Subtraction Equations: CCSS.MATH.CONTENT.1.OA.D.8

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

All Common Core: 1st Grade Math Resources

Example Questions

Example Question #672 : Operations & Algebraic Thinking

Example Question #671 : Operations & Algebraic Thinking

Example Question #161 : Working With Addition And Subtraction Equations

Example Question #91 : Find The Missing Number In Addition And Subtraction Equations: Ccss.Math.Content.1.Oa.D.8

Example Question #91 : Find The Missing Number In Addition And Subtraction Equations: Ccss.Math.Content.1.Oa.D.8

Example Question #671 : Common Core Math: Grade 1

Example Question #91 : Find The Missing Number In Addition And Subtraction Equations: Ccss.Math.Content.1.Oa.D.8

Example Question #167 : Working With Addition And Subtraction Equations

Example Question #171 : Working With Addition And Subtraction Equations

Example Question #93 : Find The Missing Number In Addition And Subtraction Equations: Ccss.Math.Content.1.Oa.D.8

All Common Core: 1st Grade Math Resources

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