Greatest Common Factor Quiz

After learning How to Get the Greatest Common Factor of Two Numbers, let’s have a quiz! The greatest common factor is used to reduce a fraction to lowest terms, so I included such items on the quiz below.

To reduce a fraction to lowest terms, get the greatest common factor of the numerator and the denominator, and then divide

Greatest Common Factor Quiz

Part 1: Get the greatest common factor of the following numbers.

1.) 12 and 15

Answer
3

2.) 18 and 28 

Answer
2

3.) 36 and 45

Answer
9

4.) 56 and 72

Answer
8

5.) 26 and 65

Answer
13

6.) 8, 12, and 64

Answer
4

7.) 30, 45, and 54

Answer
3

8.) 10 and 31

Answer
1

Part 2: Reduce the following fractions to lowest terms.

9.) \frac{21}{42}

Answer
1/2

10.) \frac{8}{24}

Answer
1/3

11.) \frac{13}{65}

Answer
1/5

12.) \frac{48}{56}

Answer
6/7

You might also want to read How to Convert Fractions to Lowest Terms.

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