How to find the greatest common factor

Practice Questions

ISEE Upper Level (grades 9-12) Quantitative Reasoning › How to find the greatest common factor

Questions

9

1

What is the greatest common factor of and ?

2

What is the greatest common factor of and ?

3

3/5 + 4/7 – 1/3 =

4

What is the greatest common factor of and ?

5

Column A Column B

The GCF of The GCF of

45 and 120 38 and 114

6

Annette's family has $8\frac{3}{5}$ jars of applesauce. In a month, they go through $4\frac{2}{3}$ jars of apple sauce. How many jars of applesauce remain?

7

, , , , and are five distinct prime integers. Give the greatest common factor of $abc^{2}d$ and $a^{2}bde^{2}$ .

8

25 is the greatest common factor of 175 and which of these numbers?

9

is an odd prime.

Which is the greater quantity?

(a)

(b) $GCF (N^{4},2)$

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