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Common Core: 3rd Grade Math : Operations & Algebraic Thinking

Study concepts, example questions & explanations for Common Core: 3rd Grade Math

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All Common Core: 3rd Grade Math Resources

7 Diagnostic Tests 226 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #5 : Understand Division As An Unknown Factor Problem: Ccss.Math.Content.3.Oa.B.6

Solve $42\div6$ $\displaystyle 42\div6$ by finding the unknown factor.

Possible Answers:

$\displaystyle 9$

$\displaystyle 6$

$\displaystyle 8$

$\displaystyle 5$

$\displaystyle 7$

Correct answer:

$\displaystyle 7$

Explanation:

A factor is a number that is multiplied by another number to produce a given number.

In this case, the unknown factor is the number multiplied by $\displaystyle 6$ to get $\displaystyle 42$.

$6\times7=42$ $\displaystyle 6\times7=42$

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Example Question #581 : Operations & Algebraic Thinking

Solve $24\div8$ $\displaystyle 24\div8$ by finding the unknown factor.

Possible Answers:

$\displaystyle 3$

$\displaystyle 5$

$\displaystyle 6$

$\displaystyle 4$

$\displaystyle 7$

Correct answer:

$\displaystyle 3$

Explanation:

A factor is a number that is multiplied by another number to produce a given number.

In this case, the unknown factor is the number multiplied by $\displaystyle 8$ to get $\displaystyle 24$.

$8\times3=24$ $\displaystyle 8\times3=24$

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Example Question #7 : Understand Division As An Unknown Factor Problem: Ccss.Math.Content.3.Oa.B.6

Solve $108\div9$ $\displaystyle 108\div9$ by finding the unknown factor.

Possible Answers:

$\displaystyle 10$

$\displaystyle 11$

$\displaystyle 13$

$\displaystyle 14$

$\displaystyle 12$

Correct answer:

$\displaystyle 12$

Explanation:

A factor is a number that is multiplied by another number to produce a given number.

In this case, the unknown factor is the number multiplied by $\displaystyle 9$ to get 108 $\displaystyle 108$.

$9\times12=108$ $\displaystyle 9\times12=108$

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Example Question #7 : Understand Division As An Unknown Factor Problem: Ccss.Math.Content.3.Oa.B.6

Solve $80\div10$ $\displaystyle 80\div10$ by finding the unknown factor.

Possible Answers:

$\displaystyle 7$

$\displaystyle 5$

$\displaystyle 8$

$\displaystyle 9$

$\displaystyle 6$

Correct answer:

$\displaystyle 8$

Explanation:

A factor is a number that is multiplied by another number to produce a given number.

In this case, the unknown factor is the number multiplied by $\displaystyle 10$ to get $\displaystyle 80$.

$10\times8=80$ $\displaystyle 10\times8=80$

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Example Question #8 : Understand Division As An Unknown Factor Problem: Ccss.Math.Content.3.Oa.B.6

Solve $33\div11$ $\displaystyle 33\div11$ by finding the unknown factor.

Possible Answers:

$\displaystyle 4$

$\displaystyle 5$

$\displaystyle 2$

$\displaystyle 3$

$\displaystyle 6$

Correct answer:

$\displaystyle 3$

Explanation:

A factor is a number that is multiplied by another number to produce a given number.

In this case, the unknown factor is the number multiplied by $\displaystyle 11$ to get $\displaystyle 33$.

$11\times3=33$ $\displaystyle 11\times3=33$

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Example Question #9 : Understand Division As An Unknown Factor Problem: Ccss.Math.Content.3.Oa.B.6

Solve $48\div12$ $\displaystyle 48\div12$ by finding the unknown factor.

Possible Answers:

$\displaystyle 3$

$\displaystyle 6$

$\displaystyle 2$

$\displaystyle 5$

$\displaystyle 4$

Correct answer:

$\displaystyle 4$

Explanation:

A factor is a number that is multiplied by another number to produce a given number.

In this case, the unknown factor is the number multiplied by $\displaystyle 12$ to get $\displaystyle 48$.

$12\times4=48$ $\displaystyle 12\times4=48$

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Example Question #31 : Understanding Properties Of Multiplication And The Relationship Between Multiplication And Division

Solve $32\div8$ $\displaystyle 32\div8$ by finding the unknown factor.

Possible Answers:

$\displaystyle 5$

$\displaystyle 6$

$\displaystyle 8$

$\displaystyle 4$

$\displaystyle 7$

Correct answer:

$\displaystyle 4$

Explanation:

A factor is a number that is multiplied by another number to produce a given number.

In this case, the unknown factor is the number multiplied by $\displaystyle 8$ to get $\displaystyle 32$.

Think: What times $\displaystyle 8$ equals 32? $\displaystyle 32?$

$8\times4=32$ $\displaystyle 8\times4=32$

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Example Question #32 : Understanding Properties Of Multiplication And The Relationship Between Multiplication And Division

Solve $63\div7$ $\displaystyle 63\div7$ by finding the unknown factor.

Possible Answers:

$\displaystyle 12$

$\displaystyle 9$

$\displaystyle 11$

$\displaystyle 8$

$\displaystyle 10$

Correct answer:

$\displaystyle 9$

Explanation:

A factor is a number that is multiplied by another number to produce a given number.

In this case, the unknown factor is the number multiplied by $\displaystyle 7$ to get $\displaystyle 63$.

Think: What times $\displaystyle 7$ equals 63? $\displaystyle 63?$

$7\times9=63$ $\displaystyle 7\times9=63$

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Example Question #33 : Understanding Properties Of Multiplication And The Relationship Between Multiplication And Division

Solve $8036\div4$ $\displaystyle 8036\div4$ by finding the unknown factor.

Possible Answers:

2008 $\displaystyle 2008$

2010 $\displaystyle 2010$

2009 $\displaystyle 2009$

2011 $\displaystyle 2011$

2007 $\displaystyle 2007$

Correct answer:

2009 $\displaystyle 2009$

Explanation:

A factor is a number that is multiplied by another number to produce a given number. In this case, the unknown factor is the number multiplied by $\displaystyle 4$ to get 8036 $\displaystyle 8036$. $4\times 2009=8036$ $\displaystyle 4\times 2009=8036$

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Example Question #34 : Understanding Properties Of Multiplication And The Relationship Between Multiplication And Division

Solve $7815\div15$ $\displaystyle 7815\div15$ by finding the unknown factor.

Possible Answers:

523 $\displaystyle 523$

521 $\displaystyle 521$

520 $\displaystyle 520$

519 $\displaystyle 519$

522 $\displaystyle 522$

Correct answer:

521 $\displaystyle 521$

Explanation:

A factor is a number that is multiplied by another number to produce a given number. In this case, the unknown factor is the number multiplied by $\displaystyle 15$ to get 7815 $\displaystyle 7815$. $15\times 521=7815$ $\displaystyle 15\times 521=7815$

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All Common Core: 3rd Grade Math Resources

7 Diagnostic Tests 226 Practice Tests Question of the Day Flashcards Learn by Concept

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Common Core: 3rd Grade Math : Operations & Algebraic Thinking

Study concepts, example questions & explanations for Common Core: 3rd Grade Math

All Common Core: 3rd Grade Math Resources

Example Questions

Example Question #5 : Understand Division As An Unknown Factor Problem: Ccss.Math.Content.3.Oa.B.6

Example Question #581 : Operations & Algebraic Thinking

Example Question #7 : Understand Division As An Unknown Factor Problem: Ccss.Math.Content.3.Oa.B.6

Example Question #7 : Understand Division As An Unknown Factor Problem: Ccss.Math.Content.3.Oa.B.6

Example Question #8 : Understand Division As An Unknown Factor Problem: Ccss.Math.Content.3.Oa.B.6

Example Question #9 : Understand Division As An Unknown Factor Problem: Ccss.Math.Content.3.Oa.B.6

Example Question #31 : Understanding Properties Of Multiplication And The Relationship Between Multiplication And Division

Example Question #32 : Understanding Properties Of Multiplication And The Relationship Between Multiplication And Division

Example Question #33 : Understanding Properties Of Multiplication And The Relationship Between Multiplication And Division

Example Question #34 : Understanding Properties Of Multiplication And The Relationship Between Multiplication And Division

All Common Core: 3rd Grade Math Resources

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