Chapter 2 Math

Number Line Vocabulary

100

Where are the positive numbers on the number line? Right side or left side?

Right side! Numbers get bigger!

200

Where are the negative numbers on the number line? Right side or left side?

Left side, numbers get smaller

300

Which is greater?

-10 or 0

0

400

Which is less?

-20 or -25

-25

500

How would you represent this with numbers?

60 feet below sea level

-60

Opposite Numbers and Absolute Value

100

What is the opposite of 2?

-2

200

What is the opposite of -1 million?

1 million

300

l 4 l = ?

4

400

l -10 l =?

10

500

What is the opposite of 0?

0

Changing Fractions and Decimals

100

What is 0.5 as a fraction?

1/2

200

What is 0.75 as a fraction?

3/4

300

What is 0.26 as a fraction?

26/100

400

What is 1/4 as a decimal?

0.25

500

What is 2/5 as a fraction?

0.8

Coordinate Plane

100

Where is the y axis? (side to side or up and down?)

up and down

200

What is the middle of the coordinate plane called at (0,0)?

the origin

300

Where are each of the quadrants located (Q1, Q2, Q3, AND Q4)?

Q2       Q1

Q3       Q4

400

A rectangle has these dimensions: 5 units, 2 units, 5 units and 2 units. What is the perimeter?

14 units

500

A rectangle has these dimensions: length = 6 feet and width = 9 feet

What is the area?

54 units squared

Challenge!!!

100

Can absolute value ever be negative?

NO!

200

What quadrant would (1,2) be in?

Q1

300

What is the difference between a rational number and an integer?

Integers are only whole numbers, rational numbers include fractions

400

What is the definition of absolute value?

The distance a number is on the number line from 0.

500

A square has a side length of 3 units. 

What is the perimeter?

What is the area?

Perimeter is 12 units

Area is 9 units squared.