Module 2 - Rational Numbers Review

Vocabulary

100

A _____________ is a number that can be written as a fraction or a decimal. 

Rational Number

200

The smallest number, other than 0, that is a multiple of two or more numbers. 

Least Common Multiple (LCM)

300

A number that has exactly 2 factors, 1 and itself. 

Prime Number 

400

The largest factor that two or more numbers have in common. 

Greatest Common Factor (GCF)

500

To compare and order two or more FRACTIONS, the fractions must be written with __________ __________. 

common denominators

Comparing & Ordering Rational Numbers

100

- 18/42 _____ - 15/21

-18/42 > -15/21

200

-3/8 ______ -5/7

-3/8  >  -5/7

300

3/8 _____ 0.64

3/8  <  0.64

400

Order from least to greatest.

-4.22,  0.8,   -4  1/2 ,  8.4,  4/3

-4  1/2, -4.22, 0.8, 4/3, 8.4

500

Order Greatest to Least...

7/10,  -0.35,  -9/25,  0.63

7/10,  0.63,  -0.35,  -9/25

GCF

100

What is the GCF of 16 and 30?

2

200

What is the GCF of 26 and 39? 

13

300

What is the GCF of 54 and 36? 

18

400

What is the GCF of 27 and 8? 

1

500

What is the GCF of 36, 54, and 72? 

18

LCM

100

What is the LCM of 15 and 9?

45

200

What is the least common denominator for the fractions...

3/4,  -2/5,  3/2

20

300

What is the LCM of 6 and 21? 

42

400

What is the Least Common Denominator for...

7/20 and 3/8

40

500

What is the LCM of 12 and 18? 

36