ISEE Lower Level Quantitative : Numbers and Operations

Study concepts, example questions & explanations for ISEE Lower Level Quantitative

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Example Questions

Example Question #171 : Numbers And Operations

Which answer below provides a factor of \(\displaystyle 68?\)

 

Possible Answers:

\(\displaystyle 14\)

\(\displaystyle 17\)

\(\displaystyle 8\)

\(\displaystyle 13\)

\(\displaystyle 12\)

Correct answer:

\(\displaystyle 17\)

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. 

\(\displaystyle 68\div17=4\)

or

\(\displaystyle 17\times4=68\)

Example Question #71 : How To Multiply

Which answer below provides a factor of \(\displaystyle 69?\)

Possible Answers:

\(\displaystyle 3\)

\(\displaystyle 6\)

\(\displaystyle 12\)

\(\displaystyle 18\)

\(\displaystyle 9\)

Correct answer:

\(\displaystyle 3\)

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. 

\(\displaystyle 69\div3=23\)

or

\(\displaystyle 23\times3=69\)

Example Question #72 : How To Multiply

Which answer below provides a factor of \(\displaystyle 70?\)

 

Possible Answers:

\(\displaystyle 17\)

\(\displaystyle 16\)

\(\displaystyle 15\)

\(\displaystyle 14\)

\(\displaystyle 12\)

Correct answer:

\(\displaystyle 14\)

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. 

\(\displaystyle 70\div14=5\)

or

\(\displaystyle 14\times5=70\)

Example Question #73 : How To Multiply

Which answer below provides a factor of \(\displaystyle 72?\)

 

Possible Answers:

\(\displaystyle 14\)

\(\displaystyle 10\)

\(\displaystyle 13\)

\(\displaystyle 9\)

\(\displaystyle 11\)

Correct answer:

\(\displaystyle 9\)

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. 

\(\displaystyle 72\div9=8\)

or

\(\displaystyle 9\times8=72\)

Example Question #74 : How To Multiply

Which answer below provides a factor of \(\displaystyle 74?\)

 

Possible Answers:

\(\displaystyle 42\)

\(\displaystyle 44\)

\(\displaystyle 36\)

\(\displaystyle 38\)

\(\displaystyle 37\)

Correct answer:

\(\displaystyle 37\)

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. 

\(\displaystyle 74\div37=2\)

or

\(\displaystyle 37\times2=74\)

Example Question #75 : How To Multiply

Which of the following is a factor of \(\displaystyle 75?\)

Possible Answers:

\(\displaystyle 4\)

\(\displaystyle 8\)

\(\displaystyle 6\)

\(\displaystyle 3\)

\(\displaystyle 7\)

Correct answer:

\(\displaystyle 3\)

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. 

\(\displaystyle 75\div3=25\)

or

\(\displaystyle 3\times25=75\)

Example Question #76 : How To Multiply

Which answer below provides a factor of \(\displaystyle 76?\)

 

Possible Answers:

\(\displaystyle 19\)

\(\displaystyle 17\)

\(\displaystyle 16\)

\(\displaystyle 18\)

\(\displaystyle 14\)

Correct answer:

\(\displaystyle 19\)

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. 

\(\displaystyle 76\div19=4\)

or

\(\displaystyle 19\times4=76\)

Example Question #77 : How To Multiply

Which answer below provides a factor of \(\displaystyle 77\)?

 

Possible Answers:

\(\displaystyle 23\)

\(\displaystyle 14\)

\(\displaystyle 17\)

\(\displaystyle 11\)

\(\displaystyle 22\)

Correct answer:

\(\displaystyle 11\)

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. 

\(\displaystyle 77\div11=7\)

or

\(\displaystyle 11\times7=77\)

Example Question #78 : How To Multiply

Which answer below provides a factor of 78?

 

Possible Answers:

\(\displaystyle 37\)

\(\displaystyle 27\)

\(\displaystyle 38\)

\(\displaystyle 39\)

\(\displaystyle 42\)

Correct answer:

\(\displaystyle 39\)

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. 

\(\displaystyle 78\div39=2\)

or

\(\displaystyle 39\times2=78\)

Example Question #79 : How To Multiply

Which answer below provides a factor of \(\displaystyle 80?\)

 

Possible Answers:

\(\displaystyle 12\)

\(\displaystyle 11\)

\(\displaystyle 14\)

\(\displaystyle 13\)

\(\displaystyle 4\)

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. 

\(\displaystyle 80\div4=20\)

or

\(\displaystyle 4\times20=80\)

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