Know that numbers that are not rational are called irrational. Understand informally that every number has a decimal expansion; for rational numbers show that the decimal expansion repeats eventually and convert a decimal expansion which repeats into a rational number.

Sample Practice Questions (3)

Based on the number line provided, which point best represents the location of

7

APoint A

BPoint B

CPoint C

DPoint D

Between which two integers does the value of

18

lie on a number line?

3

and

4

4

and

5

5

and

6

17

and

19

A square has an area of

20

square units. Which statement about the side length of the square is true?

AThe side length is a rational number because

20

is an even number.

BThe side length is an irrational number because

20

is not a perfect square.

CThe side length is

10

units.

DThe side length is a terminating decimal.

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