Download Homework 1 Name: _ Chapter 2 Pages 42

Homework 1
Name: _____________________________________________ Chapter 2 Pages 42 - 61
Practice 2.1 – Negative Numbers
Write a positive or negative number to represent each situation.
1) 438ºC above zero _______________
2) 164ºF below zero _______________
3) 8,327 feet below sea level _______________
4) 12,316 feet above sea level __________
5) A loss of 20 yards _______________
6) A credit of $3,401 _______________
Complete each number line by filling in the missing values.
7)
___
___
___
-6
___
8)
___
___
___
- 30
___
- 27
Write the opposite of each number.
9) 8 ______
10) – 5 ______
11) 21 ______
12) – 29 ______
13) 24 ______
14) – 106 ______
Draw a horizontal number line to represent each set of numbers.
15) Even negative numbers from – 24 to – 10
16) The opposites of the whole numbers from 35 to 45
-2
Homework 2
Draw a vertical number line to represent each set of numbers.
17) Odd numbers between – 91 and – 103
18) Even numbers greater than – 6 but less than 12
Use the number line to compare each pair of numbers using > or <.
19) – 9 ______ – 2
20) – 10 ______ – 4
21) – 5 ______ 4
22) 2 ______ – 6
23) – 5 ______ – 12
24) – 10 ______ 3
Complete each inequality using > or <.
25) – 27 ______ – 3
26) – 45 ______ 15
27) 25 ______ – 25
28) 19 ______ – 15
29) 14 ______ – 16
30) – 81 ______ – 80
Homework 3
Order the numbers in each set from least to greatest.
31) 3, 7, -2, -9, 0, -5
32) -10, 8, 34, -13, 10, -17
_______________________________
_______________________________
Order the numbers in each set from greatest to least.
33) -14, 43, -20, -57, 19, 31
34) 98, -101, -76, 125, -92, 113
_______________________________
_______________________________
Answer the questions.
35) Name two numbers that are each 2 units away from – 7. ____________________________
Give the opposites of these two numbers. ____________________________
36) Is the opposite of a number always negative? Explain with an example.
____________________________________________________________________________
____________________________________________________________________________
____________________________________________________________________________
37) Write an inequality using > or < for the following statement:
- 22ºC is colder than - 4ºC _______________________________
38) Your friend says that the statement 0 < - 15 is correct.
Explain why the statement is incorrect. _____________________________________________
____________________________________________________________________________
Homework 4
39) The elevation of the deepest part of the Pacific Ocean is -36,200 feet.
The elevation of the deepest part of the Indian Ocean is -24,442 feet.
Write an inequality to compare the elevations. _______________________________
In which of the two oceans is the deepest part farther from sea level? _____________________
40) The temperature at which a substance boils is called its boiling point.
Element
Boiling Point (ºC)
Oxygen
- 183
Nitrogen
- 196
Write an inequality to compare the two boiling points. _______________________________
Which element has the greater boiling point? _______________________________
Write a statement to describe each inequality.
41) – 45 feet > - 80 feet
____________________________________________________________________________
42) - 436 ºF < - 271 ºF
____________________________________________________________________________
Homework 5
Practice 2.2 – Absolute Value
Use the number line to find the absolute value of each of the following numbers.
1)
 11
________
2)
4
________
3)
6
6)
 77
________
Write the absolute value of each number.
4)
35
________
5)
 46
________
________
Complete each inequality using > or <.
7)
 26
9)
511
________
________
30
 500
8)
10)
 92
________
 707
 114
________
 628
Answer the questions.
11) Two numbers have an absolute value of 16. Which of the two numbers is greater than 12?
12) Jesse graphed a point to represent the absolute value of a number on a number line.
If the original number is less than -10, describe all the possible values for the point Jesse
graphed on the number line. Explain.
____________________________________________________________________________
____________________________________________________________________________
____________________________________________________________________________
Homework 6
13) The table show a monthly bank account statement for the period March to July.
Month
March
April
May
June
July
Balance
- $450
- $180
$200
$10
- $240
a) For which months is the account overdrawn?
____________________________________________________________________________
b) How much was the bank owed in March? __________________________________
c) In which month was the account overdrawn by the greatest amount? ___________________
d) In which month was the account overdrawn by the least amount? ___________________
e) How much was the bank owed in total? ___________________
14) The table shows some locations with their elevations.
Location
Elevation (ft)
Salton City
Desert Shores
Laguna Salada
Bombay Beach
- 124.7
- 200.1
- 32.8
- 226.4
a) What location is the closest to sea level? _____________________________________
b) Which locations are within 200 feet of sea level? ___________________________________
c) How much farther from sea level is Desert Shores than Salton City? ___________________
d) Write the locations in order from the location that is farthest from sea level to the location that
is the closest to sea level?
____________________________________________________________________________
Homework 7
15) The table shows the average surface temperature of some planets.
Planet
Average Surface
Temperature (ºC)
Earth
Saturn
Uranus
Mars
14
- 108
- 218
- 53
a) Which planet has the highest average surface temperature? __________________________
b) Which planet has the lowest average surface temperature? __________________________
c) On Earth, the boiling temperature of water at sea level is 100ºC. Which planet has an
average temperate that is closest to this temperature? ___________________
d) Order the temperatures from lowest to highest.
____________________________________________________________________________
Brain Work
1) You can interpret a negative sign in front of a number as meaning “the opposite of.”
So, - 3 means the opposite of 3.
a) What number is – (- 3) the opposite of? ___________________
b) What number is – (- 3) equal to? ___________________
2) On a certain day, the maximum recorded temperature was 15ºC and the minimum recorded
temperature was - 8ºC. How many degrees Celsius was the difference between the recorded
maximum and recorded minimum temperatures?