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

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

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Example Questions

Example Question #341 : Operations & Algebraic Thinking

Fill in the blank. 

\(\displaystyle 56=7\times\) __________

 

Possible Answers:

\(\displaystyle 7\)

\(\displaystyle 11\)

\(\displaystyle 8\)

\(\displaystyle 9\)

\(\displaystyle 10\)

Correct answer:

\(\displaystyle 8\)

Explanation:

The opposite of multiplication is division. In order to find the missing piece of this multiplication problem we can divide. 

\(\displaystyle 56\div7=8\)

\(\displaystyle 7\times8=56\)

Example Question #342 : Operations & Algebraic Thinking

Fill in the blank. 

\(\displaystyle 40=8\times\) __________

 

Possible Answers:

\(\displaystyle 4\)

\(\displaystyle 3\)

\(\displaystyle 6\)

\(\displaystyle 7\)

\(\displaystyle 5\)

Correct answer:

\(\displaystyle 5\)

Explanation:

The opposite of multiplication is division. In order to find the missing piece of this multiplication problem we can divide. 

\(\displaystyle 40\div8=5\)

\(\displaystyle 8\times5=40\)

Example Question #343 : Operations & Algebraic Thinking

Fill in the blank. 

\(\displaystyle 18=9\times\) __________

 

Possible Answers:

\(\displaystyle 3\)

\(\displaystyle 6\)

\(\displaystyle 2\)

\(\displaystyle 5\)

\(\displaystyle 4\)

Correct answer:

\(\displaystyle 2\)

Explanation:

The opposite of multiplication is division. In order to find the missing piece of this multiplication problem we can divide. 

\(\displaystyle 18\div9=2\)

\(\displaystyle 9\times2=18\)

Example Question #344 : Operations & Algebraic Thinking

Fill in the blank. 

\(\displaystyle 80=10\times\) __________

 

Possible Answers:

\(\displaystyle 7\)

\(\displaystyle 5\)

\(\displaystyle 4\)

\(\displaystyle 6\)

\(\displaystyle 8\)

Correct answer:

\(\displaystyle 8\)

Explanation:

The opposite of multiplication is division. In order to find the missing piece of this multiplication problem we can divide. 

\(\displaystyle 80\div10=8\)

\(\displaystyle 10\times8=80\)

Example Question #345 : Operations & Algebraic Thinking

Fill in the blank. 

\(\displaystyle 11=11\times\) __________

 

Possible Answers:

\(\displaystyle 1\)

\(\displaystyle 2\)

\(\displaystyle 0\)

\(\displaystyle 4\)

\(\displaystyle 3\)

Correct answer:

\(\displaystyle 1\)

Explanation:

The opposite of multiplication is division. In order to find the missing piece of this multiplication problem we can divide. 

\(\displaystyle 11\div11=1\)

\(\displaystyle 11\times1=11\)

Example Question #346 : Operations & Algebraic Thinking

Fill in the blank. 

\(\displaystyle 48=12\times\) __________

 

Possible Answers:

\(\displaystyle 2\)

\(\displaystyle 5\)

\(\displaystyle 3\)

\(\displaystyle 6\)

\(\displaystyle 4\)

Correct answer:

\(\displaystyle 4\)

Explanation:

The opposite of multiplication is division. In order to find the missing piece of this multiplication problem we can divide. 

\(\displaystyle 48\div12=4\)

\(\displaystyle 12\times4=48\)

Example Question #347 : Operations & Algebraic Thinking

Fill in the blank. 

\(\displaystyle 3=3\times\) __________

 

Possible Answers:

\(\displaystyle 4\)

\(\displaystyle 1\)

\(\displaystyle 3\)

\(\displaystyle 2\)

\(\displaystyle 5\)

Correct answer:

\(\displaystyle 1\)

Explanation:

The opposite of multiplication is division. In order to find the missing piece of this multiplication problem we can divide. 

\(\displaystyle 3\div3=1\)

\(\displaystyle 3\times1=3\)

Example Question #348 : Operations & Algebraic Thinking

Fill in the blank. 

\(\displaystyle 8=2\times\) __________

 

Possible Answers:

\(\displaystyle 3\)

\(\displaystyle 5\)

\(\displaystyle 2\)

\(\displaystyle 1\)

\(\displaystyle 4\)

Correct answer:

\(\displaystyle 4\)

Explanation:

The opposite of multiplication is division. In order to find the missing piece of this multiplication problem we can divide. 

\(\displaystyle 8\div2=4\)

\(\displaystyle 2\times4=8\)

Example Question #61 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank. 

\(\displaystyle 22=2\times\) __________

 

Possible Answers:

\(\displaystyle 7\)

\(\displaystyle 11\)

\(\displaystyle 10\)

\(\displaystyle 8\)

\(\displaystyle 9\)

Correct answer:

\(\displaystyle 11\)

Explanation:

The opposite of multiplication is division. In order to find the missing piece of this multiplication problem we can divide. 

\(\displaystyle 22\div2=11\)

\(\displaystyle 2\times11=22\)

Example Question #349 : Operations & Algebraic Thinking

Fill in the blank. 

\(\displaystyle 21=3\times\) __________

 

Possible Answers:

\(\displaystyle 8\)

\(\displaystyle 7\)

\(\displaystyle 9\)

\(\displaystyle 11\)

\(\displaystyle 10\)

Correct answer:

\(\displaystyle 7\)

Explanation:

The opposite of multiplication is division. In order to find the missing piece of this multiplication problem we can divide. 

\(\displaystyle 21\div3=7\)

\(\displaystyle 3\times7=21\)

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