Rational Numbers and Operations

Opposites

100

Give an example of two numbers that are opposites 

Example -3 and 3

200

What is the opposite of 12 on a number line?

-12

300

What  is the opposite of −7 ?

7

400

What is the opposite of -12.7?

12.7

500

What number does not have an opposite?

0

Rational vs Irrational

100

Is 0 a rational or irrational number?

rational

200

Is the square root of 2 a rational or irrational number?

Irrational

300

Is 0.75 a rational or irrational number?

Rational

400

Which of the following can be written as a fraction? 

a) 0.2

b) 0.333333...

c) - 1.5

d) all of the above

d) all of the above

500

Is pi (π ) a rational or irrational number?

irrational

Rational Number Operations

100

−8+5

-3

200

6+(−9)

-3

300

−4+(−7)

-11

400

5−12

-7

500

−9−(−3)

-6

Rational Number Operations 2

100

1.1 + (-0.8)

0.3

200

−3.2+5.7

2.5

300

8.5−(−2.3)

10.8

400

2.5+(−4.1)

-1.6

500

−1.5−2.5

-4

Rational Number Operations 3

100

3 x -3

-9

200

-40 x -30

1200

300

15 x -4

-60

400

2.7 ÷ -1

-2.7

500

−9.6÷(−3.2)

3