Chatper 2 Review 6th

Absolute Value

100

|20|

= 20

200

|-1,000,000,001|

= 1,000,000,001

300

What does absolute value measure? Can it be negative?

The absolute value measures the distance a number is from zero. It can never be negative.

400

|-3 x 7|

= 21

500

Is this possible? -2 + |f| = 1.  If you said yes, what number would f have to be equal to?

It is possible, f would have to be 3 or -3

Random

100

Is the x axis vertical or horizontal?

horizontal

200

If I said I was at an elevation of 200 feet below sea level, where would you graph that on a number line?

-200 on the y axis

300

Which of these is equal to zero? 0/6 or 6/0. Explain

0/6 is equal to zero because it is impossible to have 6 pieces out of nothing (0)

400

Order the numbers from least to greatest: 

3, 7, -2, -9, 0, -5

-9, -5, -2, 0 , 3, 7

500

What quadrant would the point (-7, 1)

Quadrant 2

Adding Negative Numbers

100

7 + (-5)

2

200

25 + (-19)

6

300

-10 + (-4)

-14

400

-125 + (-21)

-146

500

-5 + 7 - (-3) 

= 5

Subtracting Negative numbers

100

5 - (-5)

10

200

-15 - (-10)

-5

300

-23 - (-24)

=1

400

Subtracting a negative is the same as what operation?

adding

500

350 - (-6) + 40

396

Comparing Numbers

100

-20     ?        -21

>

200

- 1/2           -0.5

=

300

-4.873  ?   -4.783

<

400

(square root) of 25        ?        7

<

500

|12² |   ?          -136

>