Download Write Integers for Real

Math 6 NOTES 5.1
Name:_______________________________
Integers (SOL 6.3 a & b)
• An integer is any number from the set {…, –4, –3, –2, –1, 0, 1, 2, 3, 4, …}
where … means continues without end.
• Negative integers are integers ____________ than zero.
• Positive integers are integers _____________than zero.
• _____________ is neither negative nor positive. We call it the origin.
Number the number line from –5 to 5.
0
These numbers are Integers: 0; 3; –100; 432; 987,654,321;
These numbers are not Integers: 7.2,
10
4
, –
5
8
10
2
6
; – ;
3
99
9
, – 3.7
Write Integers for Real-Life Situations
a gain of 5 yards on the first down.
6 feet below sea level
a temperature of 10 degrees below zero.
a $35 withdrawal
You Try! Underline key words
a. Lost 6 points
h. 5000 feet above sea level
b. 3 strokes below par
i. 7 inches below normal
c. $5 deposit
j. $5 off the original price
d. A loss of $30
k. ascend 100 meters
e. descend 20 meters
l. 10 strokes above par
f. 12 centimeters longer
m. 6 yard loss
Graph an Integer on a Number Line
8
Graph –4 on a number line. Then graph on a number line. Which one is greater????
2
0
Compare Integers
–6
Use the > , <, or = to make a true sentence.
–4
a. 3
–5
b. –5
0
c. 6
6
d. –3
−
2
Positive numbers are always _________________ than negative numbers
9
3
Zero is always _____________ than a positive number, but ________________ than a
negative number.
When comparing two negative numbers, first imagine them on a number line.
Whichever negative number is closer to the zero is always __________________________.
Order Integers
SCIENCE The average surface temperatures of Jupiter, Mars, Earth, and the Moon are shown
in the table. Order the temperatures from least to greatest (in ascending order).
Name
Jupiter
Moon
Mars
Earth
Average Surface
Temperature (°F)
–162
–10
–81
59
Write the following integers in descending order.
–5,
20
4
, 3, –12, 8, –
12
3
______________________________________
??? Why is it better to have a positive bank account rather than a negative bank account?
Math 6 HOMEWORK (5.1)
Name:_______________________________
Write an integer to represent the situation below:
1) sea level
_______
2) a withdraw of 42 dollars
3) 14 degrees below 0 _______
________
4) an increase in height of 3 inches ________
Write the letter value represented by the point for each letter. Then find its opposite value.
H
-5
P
-4
-3
5) K ____
K
-2
-1
0
6) H ____
M
1
2
3
4
7) M ____
5
8) P ____
Compare using > , < , or =
9) -32
14
10) 11
–4
27
11) –9
3
12) –10
–12
Order the following from least to greatest (ascending order).
13) –8,
20
2
, 2, –13, –5,
14) –22, –11,
6
_______________________________
2
44
4
, 0, –14, 22, –
30
3
_______________________________
Order the following from greatest to least (descending order).
15) –
81
,
9
–19, 19, 99, –99,
18
2
_______________________________