Rules
Adding Integers
Subtracting Integers
Multiplying Integers
Dividing Integers
100
How do I isolate a variable?
Do the inverse operation.
100
8 + (-3)
5
100
5- 7
-2
100
31n n= -3
- 93
100
- 11x= -121
x = 11
200
How do I subtract an integer? Ex: 6 - 9=
Add the opposite. Ex: 6 + (-9)
200
(-5 + 10) + (-2)
3
200
3 - (-9)
12
200
-14n n= -3
42
200
-15n= 60
n= -4
300
What is my next step? Problem: -15 - (-36) Step One: - 15 + 36 (Add the opposite) Step Two: ?
Find the absolute value.
300
(-5 + 13 ) + (10 + (-3))
13
300
17 - 29 - t t= -7
-5
300
(-7)(-4)(-5)
- 140
300
The coldest temperature ever recorded in California was -45 degrees F. The hottest recorded temperature was 134 degrees F.How much hotter is the hottest temperature that the coldest?
179 degrees F.
400
(-2) + (-10) Is my answer negative or positive? Why?
Negative. Negative numbers can be added together and keep the same sign.
400
Ryan and Emily were playing a game. Ryan had 37 points and then scored these points to add to his total: 5, -2, 3, -5, -1, and 10. If the game ended with Emily having 45 points, who was ahead?
Ryan with 47 points.
400
The temperature was 3 degrees F when Maria went to bed. The Temperature fell 7 degrees F during the night. Write an equation and find the temperature when Maria woke up.
3-d d= 7 Answer: -4 degrees F
400
-2a + 4 a = -2
8
400
Sarah and Natalie went scuba diving and dove to 45 feet below the surface. There are 3 feet in a yard. Find how many yards the dove.
-45/3= -15 yards
500
What are the rules for Multiplying Integers? (4 rules)
Positive x Positive = Positive Positive x Negative = Negative Negative x Positive = Negative Negative x Negative= Positive EXTRA HELP: Same sign = POSITIVE Different signs = NEGATIVE
500
Greg started the month with $15.50 in his bank. He earned $5.50 for walking his neighbor's dog. Then he spent $7.25 on lunch. He mowed his neighbor's lawn for $10.00. Finally, he bought a new video game for his computer for $20.00. How much money did Greg have at the end of the month?
$3.75
500
Stella has $98 in her bank account. If she takes out $10 per week for the next 4 weeks, how much money will she have at the end of the 4 weeks?
$58
500
Sarah has $23 dollars. Will has 4 times as much money as her. How much money does Will have?
23 x 4= 92
500
Writing to Explain: Mia solved the problem below. Is Mia's work correct? If not, explain your answer. (-9 รท -3) + (-3) = -6
No, a negative divided by a negative is positive; Correct answer is 0.