Common Core: 3rd Grade Math : Determine the Unknown Number in a Multiplication or Division Equation: CCSS.Math.Content.3.OA.A.4

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

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Example Questions

Example Question #171 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank.\(\displaystyle 80=16\times\)__________

Possible Answers:

\(\displaystyle 8\)

\(\displaystyle 9\)

\(\displaystyle 7\)

\(\displaystyle 6\)

\(\displaystyle 5\)

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.\(\displaystyle \\ \\80\div 16=5\\ 16\times 5=80\)

Example Question #172 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank.\(\displaystyle 90=9\times\)__________

Possible Answers:

\(\displaystyle 11\)

\(\displaystyle 14\)

\(\displaystyle 13\)

\(\displaystyle 12\)

\(\displaystyle 10\)

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.\(\displaystyle \\ \\90\div 9=10\\ 9\times 10=90\)

Example Question #173 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank.\(\displaystyle 30=6\times\)__________

Possible Answers:

\(\displaystyle 9\)

\(\displaystyle 8\)

\(\displaystyle 6\)

\(\displaystyle 5\)

\(\displaystyle 7\)

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.\(\displaystyle \\ \\30\div 6=5\\ 6\times 5=30\)

Example Question #174 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank.\(\displaystyle 30=6\times\)__________

Possible Answers:

\(\displaystyle 7\)

\(\displaystyle 9\)

\(\displaystyle 5\)

\(\displaystyle 8\)

\(\displaystyle 6\)

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.\(\displaystyle \\ \\30\div 6=5\\ 6\times 5=30\)

Example Question #175 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank.\(\displaystyle 12=4\times\)__________

Possible Answers:

\(\displaystyle 4\)

\(\displaystyle 6\)

\(\displaystyle 5\)

\(\displaystyle 7\)

\(\displaystyle 3\)

Correct answer:

\(\displaystyle 3\)

Explanation:

The opposite of multiplication is division. In order to find the missing piece of this multiplication problem we can divide.\(\displaystyle \\ \\12\div 4=3\\ 4\times 3=12\)

Example Question #176 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank.\(\displaystyle 45=15\times\)__________

Possible Answers:

\(\displaystyle 4\)

\(\displaystyle 7\)

\(\displaystyle 5\)

\(\displaystyle 6\)

\(\displaystyle 3\)

Correct answer:

\(\displaystyle 3\)

Explanation:

The opposite of multiplication is division. In order to find the missing piece of this multiplication problem we can divide.\(\displaystyle \\ \\45\div 15=3\\ 15\times 3=45\)

Example Question #177 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank.\(\displaystyle 4=4\times\)__________

Possible Answers:

\(\displaystyle 2\)

\(\displaystyle 4\)

\(\displaystyle 1\)

\(\displaystyle 5\)

\(\displaystyle 3\)

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.\(\displaystyle \\ \\4\div 4=1\\ 4\times 1=4\)

Example Question #178 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank.\(\displaystyle 34=34\times\)__________

Possible Answers:

\(\displaystyle 2\)

\(\displaystyle 4\)

\(\displaystyle 3\)

\(\displaystyle 5\)

\(\displaystyle 1\)

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.\(\displaystyle \\ \\34\div 34=1\\ 34\times 1=34\)

Example Question #179 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank.\(\displaystyle 60=15\times\)__________

Possible Answers:

\(\displaystyle 5\)

\(\displaystyle 8\)

\(\displaystyle 4\)

\(\displaystyle 6\)

\(\displaystyle 7\)

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.\(\displaystyle \\ \\60\div 15=4\\ 15\times 4=60\)

Example Question #180 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank.\(\displaystyle 45=3\times\)__________

Possible Answers:

\(\displaystyle 19\)

\(\displaystyle 18\)

\(\displaystyle 17\)

\(\displaystyle 15\)

\(\displaystyle 16\)

Correct answer:

\(\displaystyle 15\)

Explanation:

The opposite of multiplication is division. In order to find the missing piece of this multiplication problem we can divide.\(\displaystyle \\ \\45\div 3=15\\ 3\times 15=45\)

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