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 #281 : Common Core Math: Grade 3

Fill in the blank. 

\(\displaystyle 8=1\times\) __________

 

Possible Answers:

\(\displaystyle 8\)

\(\displaystyle 6\)

\(\displaystyle 7\)

\(\displaystyle 5\)

\(\displaystyle 4\)

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. 

\(\displaystyle 8\div1=8\)

\(\displaystyle 1\times8=8\)

Example Question #2 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank. 

\(\displaystyle 20=2\times\) __________

Possible Answers:

\(\displaystyle 12\)

\(\displaystyle 10\)

\(\displaystyle 8\)

\(\displaystyle 9\)

\(\displaystyle 11\)

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. 

\(\displaystyle 20\div2=10\)

\(\displaystyle 2\times10=20\)

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

Fill in the blank. 

\(\displaystyle 6=3\times\) __________

 

Possible Answers:

\(\displaystyle 2\)

\(\displaystyle 1\)

\(\displaystyle 3\)

\(\displaystyle 4\)

\(\displaystyle 5\)

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. 

\(\displaystyle 6\div3=2\)

\(\displaystyle 3\times2=6\)

Example Question #291 : Common Core Math: Grade 3

Fill in the blank. 

\(\displaystyle 16=4\times\) __________

 

Possible Answers:

\(\displaystyle 4\)

\(\displaystyle 5\)

\(\displaystyle 1\)

\(\displaystyle 3\)

\(\displaystyle 2\)

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. 

\(\displaystyle 16\div4=4\)

\(\displaystyle 4\times4=16\)

Example Question #292 : Common Core Math: Grade 3

Fill in the blank. 

\(\displaystyle 30=5\times ______\) ________

 

Possible Answers:

\(\displaystyle 2\)

\(\displaystyle 5\)

\(\displaystyle 3\)

\(\displaystyle 6\)

\(\displaystyle 4\)

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. 

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

So:

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

Example Question #293 : Common Core Math: Grade 3

Fill in the blank. 

\(\displaystyle 84=7\times\) __________

Possible Answers:

\(\displaystyle 12\)

\(\displaystyle 9\)

\(\displaystyle 11\)

\(\displaystyle 8\)

\(\displaystyle 10\)

Correct answer:

\(\displaystyle 12\)

Explanation:

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

\(\displaystyle 84\div7=12\)

\(\displaystyle 7\times12=84\)

Example Question #294 : Common Core Math: Grade 3

Fill in the blank. 

\(\displaystyle 42=6\times\) __________

 

Possible Answers:

\(\displaystyle 9\)

\(\displaystyle 7\)

\(\displaystyle 6\)

\(\displaystyle 8\)

\(\displaystyle 10\)

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. 

\(\displaystyle 42\div6=7\)

\(\displaystyle 6\times7=42\)

Example Question #295 : Common Core Math: Grade 3

Fill in the blank. 

\(\displaystyle 48=8\times\) __________

Possible Answers:

\(\displaystyle 5\)

\(\displaystyle 6\)

\(\displaystyle 8\)

\(\displaystyle 7\)

\(\displaystyle 9\)

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. 

\(\displaystyle 48\div8=6\)

\(\displaystyle 8\times6=48\)

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

Fill in the blank. 

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

 

Possible Answers:

\(\displaystyle 5\)

\(\displaystyle 1\)

\(\displaystyle 3\)

\(\displaystyle 2\)

\(\displaystyle 4\)

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. 

\(\displaystyle 9\div9=1\)

\(\displaystyle 9\times1=9\)

Example Question #10 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank. 

\(\displaystyle 40=10\times\) __________

 

Possible Answers:

\(\displaystyle 7\)

\(\displaystyle 3\)

\(\displaystyle 5\)

\(\displaystyle 4\)

\(\displaystyle 6\)

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. 

\(\displaystyle 40\div10=4\)

\(\displaystyle 10\times4=40\)

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