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 #449 : Common Core Math: Grade 3

Fill in the blank.\(\displaystyle 49=49\times\)__________

Possible Answers:

\(\displaystyle 5\)

\(\displaystyle 3\)

\(\displaystyle 1\)

\(\displaystyle 2\)

\(\displaystyle 4\)

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.\(\displaystyle \\ \\49\div 49=1\\ 49\times 1=49\)

Example Question #450 : Common Core Math: Grade 3

Fill in the blank.\(\displaystyle 85=5\times\)__________

Possible Answers:

\(\displaystyle 21\)

\(\displaystyle 17\)

\(\displaystyle 19\)

\(\displaystyle 18\)

\(\displaystyle 20\)

Correct answer:

\(\displaystyle 17\)

Explanation:

The opposite of multiplication is division. In order to find the missing piece of this multiplication problem we can divide.\(\displaystyle \\ \\85\div 5=17\\ 5\times 17=85\)

Example Question #161 : 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:

\(\displaystyle 3\)

\(\displaystyle 4\)

\(\displaystyle 5\)

\(\displaystyle 2\)

\(\displaystyle 1\)

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

Example Question #162 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank.\(\displaystyle 32=8\times\)__________

Possible Answers:

\(\displaystyle 4\)

\(\displaystyle 5\)

\(\displaystyle 8\)

\(\displaystyle 7\)

\(\displaystyle 6\)

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.\(\displaystyle \\ \\32\div 8=4\\ 8\times 4=32\)

Example Question #163 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank.\(\displaystyle 15=3\times\)__________

Possible Answers:

\(\displaystyle 6\)

\(\displaystyle 8\)

\(\displaystyle 9\)

\(\displaystyle 7\)

\(\displaystyle 5\)

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.\(\displaystyle \\ \\15\div 3=5\\ 3\times 5=15\)

Example Question #164 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank.\(\displaystyle 25=25\times\)__________

Possible Answers:

\(\displaystyle 4\)

\(\displaystyle 1\)

\(\displaystyle 2\)

\(\displaystyle 3\)

\(\displaystyle 5\)

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.\(\displaystyle \\ \\25\div 25=1\\ 25\times 1=25\)

Example Question #165 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank.\(\displaystyle 42=2\times\)__________

Possible Answers:

\(\displaystyle 21\)

\(\displaystyle 24\)

\(\displaystyle 25\)

\(\displaystyle 22\)

\(\displaystyle 23\)

Correct answer:

\(\displaystyle 21\)

Explanation:

The opposite of multiplication is division. In order to find the missing piece of this multiplication problem we can divide.\(\displaystyle \\ \\42\div 2=21\\ 2\times 21=42\)

Example Question #166 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank.\(\displaystyle 21=21\times\)__________

Possible Answers:

\(\displaystyle 1\)

\(\displaystyle 2\)

\(\displaystyle 3\)

\(\displaystyle 4\)

\(\displaystyle 5\)

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.\(\displaystyle \\ \\21\div 21=1\\ 21\times 1=21\)

Example Question #167 : 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:

\(\displaystyle 19\)

\(\displaystyle 17\)

\(\displaystyle 16\)

\(\displaystyle 15\)

\(\displaystyle 18\)

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.\(\displaystyle \\ \\45\div 3=15\\ 3\times 15=45\)

Example Question #168 : Determine The Unknown Number In A Multiplication Or Division Equation: Ccss.Math.Content.3.Oa.A.4

Fill in the blank.\(\displaystyle 66=6\times\)__________

Possible Answers:

\(\displaystyle 12\)

\(\displaystyle 11\)

\(\displaystyle 14\)

\(\displaystyle 15\)

\(\displaystyle 13\)

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.\(\displaystyle \\ \\66\div 6=11\\ 6\times 11=66\)

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