Common Core: 3rd Grade Math : Common Core Math: Grade 3

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

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Example Questions

Example Question #103 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank. 

\(\displaystyle 28=7\times\) __________

 

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. 

\(\displaystyle 28\div7=4\)

\(\displaystyle 7\times4=28\)

Example Question #104 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank. 

\(\displaystyle 16=8\times\) __________

 

Possible Answers:

\(\displaystyle 4\)

\(\displaystyle 5\)

\(\displaystyle 3\)

\(\displaystyle 2\)

\(\displaystyle 1\)

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. 

\(\displaystyle 16\div8=2\)

\(\displaystyle 8\times2=16\)

Example Question #105 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank. 

\(\displaystyle 72=9\times\) __________

 

Possible Answers:

\(\displaystyle 8\)

\(\displaystyle 6\)

\(\displaystyle 7\)

\(\displaystyle 9\)

\(\displaystyle 5\)

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. 

\(\displaystyle 72\div9=8\)

\(\displaystyle 9\times8=72\)

Example Question #106 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank. 

\(\displaystyle 60=10\times\) __________

 

Possible Answers:

\(\displaystyle 7\)

\(\displaystyle 9\)

\(\displaystyle 8\)

\(\displaystyle 6\)

\(\displaystyle 10\)

Correct answer:

\(\displaystyle 6\)

Explanation:

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

\(\displaystyle 60\div10=6\)

\(\displaystyle 10\times6=60\)

Example Question #107 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank. 

\(\displaystyle 77=11\times\) __________

 

Possible Answers:

\(\displaystyle 3\)

\(\displaystyle 5\)

\(\displaystyle 4\)

\(\displaystyle 6\)

\(\displaystyle 7\)

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. 

\(\displaystyle 77\div11=7\)

\(\displaystyle 11\times7=77\)

Example Question #108 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank. 

\(\displaystyle 120=12\times\) __________

 

Possible Answers:

\(\displaystyle 8\)

\(\displaystyle 9\)

\(\displaystyle 12\)

\(\displaystyle 10\)

\(\displaystyle 11\)

Correct answer:

\(\displaystyle 10\)

Explanation:

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

\(\displaystyle 120\div12=10\)

\(\displaystyle 12\times10=120\)

Example Question #109 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank. 

\(\displaystyle 108=12\times\) __________

 

Possible Answers:

\(\displaystyle 7\)

\(\displaystyle 10\)

\(\displaystyle 8\)

\(\displaystyle 9\)

\(\displaystyle 11\)

Correct answer:

\(\displaystyle 9\)

Explanation:

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

\(\displaystyle 108\div12=9\)

\(\displaystyle 12\times9=108\)

Example Question #102 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank. 

\(\displaystyle 7=1\times\) __________

 

Possible Answers:

\(\displaystyle 8\)

\(\displaystyle 9\)

\(\displaystyle 11\)

\(\displaystyle 10\)

\(\displaystyle 7\)

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. 

\(\displaystyle 7\div1=7\)

\(\displaystyle 1\times7=7\)

Example Question #111 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank. 

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

 

Possible Answers:

\(\displaystyle 0\)

\(\displaystyle 4\)

\(\displaystyle 3\)

\(\displaystyle 2\)

\(\displaystyle 1\)

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. 

\(\displaystyle 2\div2=1\)

\(\displaystyle 2\times1=2\)

Example Question #112 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank. 

\(\displaystyle 30=3\times\) __________

 

Possible Answers:

\(\displaystyle 10\)

\(\displaystyle 11\)

\(\displaystyle 8\)

\(\displaystyle 7\)

\(\displaystyle 9\)

Correct answer:

\(\displaystyle 10\)

Explanation:

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

\(\displaystyle 30\div3=10\)

\(\displaystyle 3\times10=30\)

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