Common Core: 3rd Grade Math : Multiplying and Dividing within 100

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

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Example Questions

Example Question #1 : Multiplying And Dividing Within 100

\(\displaystyle 5{\overline{\smash{)}35}}\)

 

Possible Answers:

\(\displaystyle 10\)

\(\displaystyle 7\)

\(\displaystyle 8\)

\(\displaystyle 9\)

\(\displaystyle 11\)

Correct answer:

\(\displaystyle 7\)

Explanation:

\(\displaystyle 5{\overline{\smash{)}35}}\)

To solve this division problem, we can think of it as a missing factor problem. 

Think: What times \(\displaystyle 5\) equals \(\displaystyle 35?\)

\(\displaystyle 5\times7=35\) 

Example Question #2 : Multiplying And Dividing Within 100

\(\displaystyle 5{\overline{\smash{)}15}}\)

 

Possible Answers:

\(\displaystyle 5\)

\(\displaystyle 2\)

\(\displaystyle 4\)

\(\displaystyle 6\)

\(\displaystyle 3\)

Correct answer:

\(\displaystyle 3\)

Explanation:

\(\displaystyle 5{\overline{\smash{)}15}}\)

To solve this division problem, we can think of it as a missing factor problem. 

Think: What times \(\displaystyle 5\) equals \(\displaystyle 15?\)

\(\displaystyle 5\times3=15\) 

Example Question #41 : Operations

\(\displaystyle 5{\overline{\smash{)}50}}\)

 

Possible Answers:

\(\displaystyle 8\)

\(\displaystyle 6\)

\(\displaystyle 9\)

\(\displaystyle 7\)

\(\displaystyle 10\)

Correct answer:

\(\displaystyle 10\)

Explanation:

\(\displaystyle 5{\overline{\smash{)}50}}\)

To solve this division problem, we can think of it as a missing factor problem. 

Think: What times \(\displaystyle 5\) equals \(\displaystyle 50?\)

\(\displaystyle 5\times10=50\) 

Example Question #431 : How To Divide

\(\displaystyle 5{\overline{\smash{)}20}}\)

 

Possible Answers:

\(\displaystyle 4\)

\(\displaystyle 2\)

\(\displaystyle 1\)

\(\displaystyle 3\)

\(\displaystyle 5\)

Correct answer:

\(\displaystyle 4\)

Explanation:

\(\displaystyle 5{\overline{\smash{)}20}}\)

To solve this division problem, we can think of it as a missing factor problem. 

Think: What times \(\displaystyle 5\) equals \(\displaystyle 20?\)

\(\displaystyle 5\times4=20\) 

Example Question #43 : Numbers And Operations

Solve the following: 

\(\displaystyle 6{\overline{\smash{)}42}}\)

Possible Answers:

\(\displaystyle 10\)

\(\displaystyle 7\)

\(\displaystyle 8\)

\(\displaystyle 11\)

\(\displaystyle 9\)

Correct answer:

\(\displaystyle 7\)

Explanation:

\(\displaystyle 6{\overline{\smash{)}42}}\)

To solve this division problem, we can think of it as a missing factor problem. 

Think: What times \(\displaystyle 6\) equals \(\displaystyle 42?\)

\(\displaystyle 6\times7=42\) 

Example Question #42 : How To Divide

\(\displaystyle 6{\overline{\smash{)}12}}\)

 

Possible Answers:

\(\displaystyle 2\)

\(\displaystyle 5\)

\(\displaystyle 4\)

\(\displaystyle 3\)

\(\displaystyle 1\)

Correct answer:

\(\displaystyle 2\)

Explanation:

\(\displaystyle 6{\overline{\smash{)}12}}\)

To solve this division problem, we can think of it as a missing factor problem. 

Think: What times \(\displaystyle 6\) equals \(\displaystyle 12?\)

\(\displaystyle 6\times2=12\) 

Example Question #1 : Multiplying And Dividing Within 100

\(\displaystyle 7{\overline{\smash{)}49}}\)

 

Possible Answers:

\(\displaystyle 4\)

\(\displaystyle 5\)

\(\displaystyle 8\)

\(\displaystyle 7\)

\(\displaystyle 6\)

Correct answer:

\(\displaystyle 7\)

Explanation:

\(\displaystyle 7{\overline{\smash{)}49}}\)

To solve this division problem, we can think of it as a missing factor problem. 

Think: What times \(\displaystyle 7\) equals \(\displaystyle 49?\)

\(\displaystyle 7\times7=49\) 

Example Question #8 : Multiplying And Dividing Within 100

\(\displaystyle 7{\overline{\smash{)}70}}\)

 

Possible Answers:

\(\displaystyle 10\)

\(\displaystyle 8\)

\(\displaystyle 12\)

\(\displaystyle 11\)

\(\displaystyle 9\)

Correct answer:

\(\displaystyle 10\)

Explanation:

\(\displaystyle 7{\overline{\smash{)}70}}\)

To solve this division problem, we can think of it as a missing factor problem. 

Think: What times \(\displaystyle 7\) equals \(\displaystyle 70?\)

\(\displaystyle 7\times10=70\) 

Example Question #2 : Multiply And Divide Within 100: Ccss.Math.Content.3.Oa.C.7

\(\displaystyle 7{\overline{\smash{)}35}}\)

 

Possible Answers:

\(\displaystyle 6\)

\(\displaystyle 9\)

\(\displaystyle 7\)

\(\displaystyle 5\)

\(\displaystyle 8\)

Correct answer:

\(\displaystyle 5\)

Explanation:

\(\displaystyle 7{\overline{\smash{)}35}}\)

To solve this division problem, we can think of it as a missing factor problem. 

Think: What times \(\displaystyle 7\) equals \(\displaystyle 35?\)

\(\displaystyle 7\times5=35\) 

Example Question #4 : Multiplying And Dividing Within 100

\(\displaystyle 7{\overline{\smash{)}21}}\)

 

Possible Answers:

\(\displaystyle 3\)

\(\displaystyle 6\)

\(\displaystyle 2\)

\(\displaystyle 4\)

\(\displaystyle 5\)

Correct answer:

\(\displaystyle 3\)

Explanation:

\(\displaystyle 7{\overline{\smash{)}21}}\)

To solve this division problem, we can think of it as a missing factor problem. 

Think: What times \(\displaystyle 7\) equals \(\displaystyle 21?\)

\(\displaystyle 7\times3=21\) 

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