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

Fill in the blank. 

\(\displaystyle 5=1\times\) __________

 

Possible Answers:

\(\displaystyle 9\)

\(\displaystyle 7\)

\(\displaystyle 8\)

\(\displaystyle 5\)

\(\displaystyle 6\)

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. 

\(\displaystyle 5\div1=5\)

\(\displaystyle 1\times5=5\)

Example Question #72 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank. 

\(\displaystyle 18=2\times\) __________

 

Possible Answers:

\(\displaystyle 9\)

\(\displaystyle 7\)

\(\displaystyle 5\)

\(\displaystyle 8\)

\(\displaystyle 6\)

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. 

\(\displaystyle 18\div2=9\)

\(\displaystyle 2\times9=18\)

Example Question #361 : Common Core Math: Grade 3

Fill in the blank. 

\(\displaystyle 12=3\times\) __________

 

Possible Answers:

\(\displaystyle 5\)

\(\displaystyle 4\)

\(\displaystyle 6\)

\(\displaystyle 3\)

\(\displaystyle 2\)

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. 

\(\displaystyle 12\div3=4\)

\(\displaystyle 3\times4=12\)

Example Question #73 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank. 

\(\displaystyle 28=4\times\) __________

 

Possible Answers:

\(\displaystyle 3\)

\(\displaystyle 5\)

\(\displaystyle 7\)

\(\displaystyle 4\)

\(\displaystyle 8\)

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. 

\(\displaystyle 28\div4=7\)

\(\displaystyle 4\times7=28\)

Example Question #74 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank. 

\(\displaystyle 10=5\times\) __________

 

Possible Answers:

\(\displaystyle 5\)

\(\displaystyle 4\)

\(\displaystyle 3\)

\(\displaystyle 1\)

\(\displaystyle 2\)

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. 

\(\displaystyle 10\div5=2\)

\(\displaystyle 5\times2=10\)

Example Question #75 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank. 

\(\displaystyle 54=6\times\) __________

 

Possible Answers:

\(\displaystyle 9\)

\(\displaystyle 11\)

\(\displaystyle 8\)

\(\displaystyle 7\)

\(\displaystyle 10\)

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. 

\(\displaystyle 54\div6=9\)

\(\displaystyle 6\times9=54\)

Example Question #76 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank. 

\(\displaystyle 42=7\times\) __________

 

Possible Answers:

\(\displaystyle 8\)

\(\displaystyle 10\)

\(\displaystyle 9\)

\(\displaystyle 7\)

\(\displaystyle 6\)

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. 

\(\displaystyle 42\div7=6\)

\(\displaystyle 7\times6=42\)

Example Question #362 : Common Core Math: Grade 3

Fill in the blank. 

\(\displaystyle 80=8\times\) __________

 

Possible Answers:

\(\displaystyle 10\)

\(\displaystyle 11\)

\(\displaystyle 9\)

\(\displaystyle 8\)

\(\displaystyle 7\)

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. 

\(\displaystyle 80\div8=10\)

\(\displaystyle 8\times10=80\)

Example Question #81 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank. 

\(\displaystyle 45=9\times\) __________

 

Possible Answers:

\(\displaystyle 6\)

\(\displaystyle 4\)

\(\displaystyle 8\)

\(\displaystyle 5\)

\(\displaystyle 7\)

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. 

\(\displaystyle 45\div9=5\)

\(\displaystyle 9\times5=45\)

Example Question #363 : Common Core Math: Grade 3

Fill in the blank. 

\(\displaystyle 20=10\times\) __________

 

Possible Answers:

\(\displaystyle 2\)

\(\displaystyle 6\)

\(\displaystyle 3\)

\(\displaystyle 4\)

\(\displaystyle 5\)

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. 

\(\displaystyle 20\div10=2\)

\(\displaystyle 10\times2=20\)

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