Common Core: 4th Grade Math : Find Factor Pairs: CCSS.Math.Content.4.OA.B.4

Study concepts, example questions & explanations for Common Core: 4th Grade Math

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Example Questions

Example Question #71 : Find Factor Pairs: Ccss.Math.Content.4.Oa.B.4

Which answer below provides a factor of \(\displaystyle 12?\)

Possible Answers:

\(\displaystyle 5\)

\(\displaystyle 10\)

\(\displaystyle 11\)

\(\displaystyle 4\)

\(\displaystyle 24\)

Correct answer:

\(\displaystyle 4\)

Explanation:

A factor is a number that can be evenly divided into a given number, or a number when multiplied  by another number equals the given number. 

\(\displaystyle 12\div4=3\)

or

\(\displaystyle 4\times3=12\)

Example Question #72 : Find Factor Pairs: Ccss.Math.Content.4.Oa.B.4

Which answer below provides a factor of \(\displaystyle 8?\)

 

Possible Answers:

\(\displaystyle 16\)

\(\displaystyle 5\)

\(\displaystyle 2\)

\(\displaystyle 6\)

\(\displaystyle 7\)

Correct answer:

\(\displaystyle 2\)

Explanation:

A factor is a number that can be evenly divided into a given number, or a number when multiplied  by another number equals the given number. 

\(\displaystyle 8\div2=4\)

or

\(\displaystyle 2\times4=8\)

Example Question #167 : Common Core Math: Grade 4

Which number below is prime? 

 

Possible Answers:

\(\displaystyle 21\)

\(\displaystyle 14\)

\(\displaystyle 4\)

\(\displaystyle 7\)

\(\displaystyle 20\)

Correct answer:

\(\displaystyle 7\)

Explanation:

A prime number is a number that cannot be divided evenly by any number , other than \(\displaystyle 1\) and itself. This means that a prime number has no divisors or factors.

Of the choices above, \(\displaystyle 7\) is the only number with no divisors or factors. 

\(\displaystyle 4\) can de divided evenly by \(\displaystyle 2\)

\(\displaystyle 14\)  can be divded evenly by \(\displaystyle 2\) and \(\displaystyle 7\)

\(\displaystyle 20\) can be divided evenly by \(\displaystyle 2,4,5,10\) 

\(\displaystyle 21\) can be divided evenly by \(\displaystyle 3\) and \(\displaystyle 7\)

Example Question #73 : Find Factor Pairs: Ccss.Math.Content.4.Oa.B.4

Which number below is prime? 

 

Possible Answers:

\(\displaystyle 5\)

\(\displaystyle 6\)

\(\displaystyle 8\)

\(\displaystyle 10\)

\(\displaystyle 4\)

Correct answer:

\(\displaystyle 5\)

Explanation:

A prime number is a number that cannot be divided evenly by any number , other than \(\displaystyle 1\) and itself. This means that a prime number has no divisors or factors.

Of the choices above, \(\displaystyle 5\) is the only number with no divisors or factors. 

\(\displaystyle 4\) can de divided evenly by \(\displaystyle 2\)

\(\displaystyle 6\)  can be divded evenly by \(\displaystyle 2\) and \(\displaystyle 3\)

\(\displaystyle 8\) can be divided evenly by \(\displaystyle 2\) and \(\displaystyle 4\)

\(\displaystyle 10\) can be divided evenly by \(\displaystyle 2\) and \(\displaystyle 5\)

Example Question #74 : Find Factor Pairs: Ccss.Math.Content.4.Oa.B.4

Which number below is prime? 

 

Possible Answers:

\(\displaystyle 3\)

\(\displaystyle 4\)

\(\displaystyle 6\)

\(\displaystyle 8\)

\(\displaystyle 9\)

Correct answer:

\(\displaystyle 3\)

Explanation:

A prime number is a number that cannot be divided evenly by any number , other than \(\displaystyle 1\) and itself. This means that a prime number has no divisors or factors.

Of the choices above, \(\displaystyle 3\) is the only number with no divisors or factors. 

\(\displaystyle 4\) can de divided evenly by \(\displaystyle 2\)

\(\displaystyle 6\)  can be divded evenly by \(\displaystyle 2\) and \(\displaystyle 3\)

\(\displaystyle 8\) can be divided evenly by \(\displaystyle 2\) and \(\displaystyle 4\)

\(\displaystyle 9\) can be divided evenly by \(\displaystyle 3\)

Example Question #75 : Find Factor Pairs: Ccss.Math.Content.4.Oa.B.4

Which number below is prime? 

Possible Answers:

\(\displaystyle 6\)

\(\displaystyle 8\)

\(\displaystyle 2\)

\(\displaystyle 9\)

\(\displaystyle 4\)

Correct answer:

\(\displaystyle 2\)

Explanation:

A prime number is a number that cannot be divided evenly by any number , other than \(\displaystyle 1\) and itself. This means that a prime number has no divisors or factors.

Of the choices above, \(\displaystyle 2\) is the only number with no divisors or factors. 

\(\displaystyle 4\) can de divided evenly by \(\displaystyle 2\)

\(\displaystyle 6\)  can be divded evenly by \(\displaystyle 2\) and \(\displaystyle 3\)

\(\displaystyle 8\) can be divided evenly by \(\displaystyle 2\) and \(\displaystyle 4\)

\(\displaystyle 9\) can be divided evenly by \(\displaystyle 3\)

Example Question #76 : Find Factor Pairs: Ccss.Math.Content.4.Oa.B.4

What number below is prime?

Possible Answers:

\(\displaystyle 12\)

\(\displaystyle 16\)

\(\displaystyle 14\)

\(\displaystyle 11\)

\(\displaystyle 15\)

Correct answer:

\(\displaystyle 11\)

Explanation:

A prime number is a number that cannot be divided evenly by any number , other than \(\displaystyle 1\) and itself. This means that a prime number has no divisors or factors.

Of the choices above, \(\displaystyle 11\) is the only number with no divisors or factors. 

\(\displaystyle 12\) can de divided evenly by \(\displaystyle 2,3,4,6\)

\(\displaystyle 14\)  can be divded evenly by \(\displaystyle 2\) and \(\displaystyle 7\)

\(\displaystyle 15\) can be divided evenly by \(\displaystyle 3\) and \(\displaystyle 5\)

\(\displaystyle 16\) can be divided evenly by \(\displaystyle 2,4,8\)

Example Question #51 : How To Divide

Which number below is prime? 

 

Possible Answers:

\(\displaystyle 16\)

\(\displaystyle 14\)

\(\displaystyle 15\)

\(\displaystyle 13\)

\(\displaystyle 12\)

Correct answer:

\(\displaystyle 13\)

Explanation:

A prime number is a number that cannot be divided evenly by any number , other than \(\displaystyle 1\) and itself. This means that a prime number has no divisors or factors.

Of the choices above, \(\displaystyle 13\) is the only number with no divisors or factors. 

\(\displaystyle 12\) can de divided evenly by \(\displaystyle 2,3,4,6\)

\(\displaystyle 14\)  can be divded evenly by \(\displaystyle 2\) and \(\displaystyle 7\)

\(\displaystyle 15\) can be divided evenly by \(\displaystyle 3\) and \(\displaystyle 5\)

\(\displaystyle 16\) can be divided evenly by \(\displaystyle 2,4,8\)

Example Question #77 : Find Factor Pairs: Ccss.Math.Content.4.Oa.B.4

Which number below is prime? 

 

Possible Answers:

\(\displaystyle 15\)

\(\displaystyle 16\)

\(\displaystyle 21\)

\(\displaystyle 14\)

\(\displaystyle 17\)

Correct answer:

\(\displaystyle 17\)

Explanation:

A prime number is a number that cannot be divided evenly by any number , other than \(\displaystyle 1\) and itself. This means that a prime number has no divisors or factors.

Of the choices above, \(\displaystyle 17\) is the only number with no divisors or factors. 

\(\displaystyle 14\) can de divided evenly by \(\displaystyle 2\) and \(\displaystyle 7\)

\(\displaystyle 15\)  can be divded evenly by \(\displaystyle 3\) and \(\displaystyle 5\)

\(\displaystyle 16\) can be divided evenly by \(\displaystyle 2,4,8\)

\(\displaystyle 21\) can be divided evenly by \(\displaystyle 3\) and \(\displaystyle 7\)

Example Question #74 : Find Factor Pairs: Ccss.Math.Content.4.Oa.B.4

Which number below is prime? 

 

Possible Answers:

\(\displaystyle 25\)

\(\displaystyle 19\)

\(\displaystyle 24\)

\(\displaystyle 20\)

\(\displaystyle 16\)

Correct answer:

\(\displaystyle 19\)

Explanation:

A prime number is a number that cannot be divided evenly by any number , other than \(\displaystyle 1\) and itself. This means that a prime number has no divisors or factors.

Of the choices above, \(\displaystyle 19\) is the only number with no divisors or factors. 

\(\displaystyle 24\) can de divided evenly by \(\displaystyle 2,3,4,6,8,12\)

\(\displaystyle 16\)  can be divded evenly by \(\displaystyle 2,4,8\)

\(\displaystyle 25\) can be divided evenly by \(\displaystyle 5\)

\(\displaystyle 20\) can be divided evenly by \(\displaystyle 2,4,5,10\)

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