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Common Core: 1st Grade Math : Use the Unknown-Addend to Subtract: CCSS.MATH.CONTENT.1.OA.B.4

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All Common Core: 1st Grade Math Resources

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Example Questions

Example Question #11 : Common Core Math: Grade 1

What can we add to $\displaystyle 4$ to get 13? $\displaystyle 13?$

Possible Answers:

$\displaystyle 7$

$\displaystyle 8$

$\displaystyle 9$

$\displaystyle 5$

$\displaystyle 6$

Correct answer:

$\displaystyle 9$

Explanation:

4+9=13 $\displaystyle 4+9=13$ or as a subtraction problem, 13-4=9 $\displaystyle 13-4=9$ .

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Example Question #12 : Common Core Math: Grade 1

What can we add to $\displaystyle 6$ to get to 12? $\displaystyle 12?$

Possible Answers:

$\displaystyle 9$

$\displaystyle 6$

$\displaystyle 10$

$\displaystyle 8$

$\displaystyle 7$

Correct answer:

$\displaystyle 6$

Explanation:

6+6=12 $\displaystyle 6+6=12$ or as a subtraction problem, 12-6=6 $\displaystyle 12-6=6$ .

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Example Question #13 : Common Core Math: Grade 1

What can we add to $\displaystyle 7$ to get 10? $\displaystyle 10?$

Possible Answers:

$\displaystyle 4$

$\displaystyle 2$

$\displaystyle 1$

$\displaystyle 3$

$\displaystyle 5$

Correct answer:

$\displaystyle 3$

Explanation:

7+3=10 $\displaystyle 7+3=10$ or as a subtraction problem, 10-7=3 $\displaystyle 10-7=3$ .

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Example Question #14 : Common Core Math: Grade 1

What can we add to $\displaystyle 5$ to get to $\displaystyle 9?$

Possible Answers:

$\displaystyle 0$

$\displaystyle 3$

$\displaystyle 2$

$\displaystyle 4$

$\displaystyle 1$

Correct answer:

$\displaystyle 4$

Explanation:

5+4=9 $\displaystyle 5+4=9$ or as a subtraction problem, 9-5=4 $\displaystyle 9-5=4$ .

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Example Question #1 : Use The Unknown Addend To Subtract: Ccss.Math.Content.1.Oa.B.4

What can we add to $\displaystyle 12$ to get to 16? $\displaystyle 16?$

Possible Answers:

$\displaystyle 7$

$\displaystyle 4$

$\displaystyle 5$

$\displaystyle 6$

$\displaystyle 8$

Correct answer:

$\displaystyle 4$

Explanation:

12+4=16 $\displaystyle 12+4=16$ or as a subtraction problem, 16-12=4 $\displaystyle 16-12=4$ .

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Example Question #2 : Use The Unknown Addend To Subtract: Ccss.Math.Content.1.Oa.B.4

What can we add to $\displaystyle 9$ to get to 15? $\displaystyle 15?$

Possible Answers:

$\displaystyle 8$

$\displaystyle 5$

$\displaystyle 4$

$\displaystyle 7$

$\displaystyle 6$

Correct answer:

$\displaystyle 6$

Explanation:

9+6=15 $\displaystyle 9+6=15$ or as a subtraction problem, 15-9=6 $\displaystyle 15-9=6$ .

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Example Question #3 : Use The Unknown Addend To Subtract: Ccss.Math.Content.1.Oa.B.4

What can we add to $\displaystyle 12$ to get 20? $\displaystyle 20?$

Possible Answers:

$\displaystyle 7$

$\displaystyle 5$

$\displaystyle 4$

$\displaystyle 6$

$\displaystyle 8$

Correct answer:

$\displaystyle 8$

Explanation:

12+8=20 $\displaystyle 12+8=20$ or as a subtraction problem, 20-12=8 $\displaystyle 20-12=8$ .

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Example Question #4 : Use The Unknown Addend To Subtract: Ccss.Math.Content.1.Oa.B.4

What can we add to $\displaystyle 12$ to get to 14? $\displaystyle 14?$

Possible Answers:

$\displaystyle 3$

$\displaystyle 6$

$\displaystyle 5$

$\displaystyle 2$

$\displaystyle 4$

Correct answer:

$\displaystyle 2$

Explanation:

12+2=14 $\displaystyle 12+2=14$ or as a subtraction problem, 14-12=2 $\displaystyle 14-12=2$ .

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Example Question #1 : Use The Unknown Addend To Subtract: Ccss.Math.Content.1.Oa.B.4

What can we add to $\displaystyle 14$ to get 18? $\displaystyle 18?$

Possible Answers:

$\displaystyle 5$

$\displaystyle 4$

$\displaystyle 7$

$\displaystyle 6$

$\displaystyle 8$

Correct answer:

$\displaystyle 4$

Explanation:

14+4=18 $\displaystyle 14+4=18$ or as a subtraction problem, 18-14=4 $\displaystyle 18-14=4$ .

Report an Error

Example Question #5 : Use The Unknown Addend To Subtract: Ccss.Math.Content.1.Oa.B.4

What can we add to $\displaystyle 6$ to get to 14? $\displaystyle 14?$

Possible Answers:

$\displaystyle 9$

$\displaystyle 5$

$\displaystyle 7$

$\displaystyle 8$

$\displaystyle 6$

Correct answer:

$\displaystyle 8$

Explanation:

6+8=14 $\displaystyle 6+8=14$ or as a subtraction problem, 14-6=8 $\displaystyle 14-6=8$ .

Report an Error

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Common Core: 1st Grade Math : Use the Unknown-Addend to Subtract: CCSS.MATH.CONTENT.1.OA.B.4

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

All Common Core: 1st Grade Math Resources

Example Questions

Example Question #11 : Common Core Math: Grade 1

Example Question #12 : Common Core Math: Grade 1

Example Question #13 : Common Core Math: Grade 1

Example Question #14 : Common Core Math: Grade 1

Example Question #1 : Use The Unknown Addend To Subtract: Ccss.Math.Content.1.Oa.B.4

Example Question #2 : Use The Unknown Addend To Subtract: Ccss.Math.Content.1.Oa.B.4

Example Question #3 : Use The Unknown Addend To Subtract: Ccss.Math.Content.1.Oa.B.4

Example Question #4 : Use The Unknown Addend To Subtract: Ccss.Math.Content.1.Oa.B.4

Example Question #1 : Use The Unknown Addend To Subtract: Ccss.Math.Content.1.Oa.B.4

Example Question #5 : Use The Unknown Addend To Subtract: Ccss.Math.Content.1.Oa.B.4

All Common Core: 1st Grade Math Resources

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