Adding Integers
Subtracting Integers
Multiplying/Dividing Integers
Vocabulary/Concepts
Word Problems
100
(-9) + (-7)
-16
100
(+17) - (+5)
+12
100
(+7) x (-8)
-56
100
What is the smallest number? -20, -13, 1
-20
100
Irene has a checking account. On Monday she withdraws $160. On Tuesday she deposits $180 back into her account, what is the expression to represent this problem. Then state how much money she has in her account.
(-$160) + (+$180) = +$20
200
(+14) + (-13)
+1
200
(+6) - (-3)
+9
200
(-10) ÷ (-2)
+5
200
What do words like increase, rise, deposit, above demonstrate?
Positive integers
200
The Texans football team ran 4 plays and each play they lost 2 yards. How many yards did they gain or lose?
Write the expression to represent the situation and then find the answer.
(+4)(-2) = -8 yards
300
(+17) + (+5) + (-6)
+16
300
(-16) - (+8)
-24
300
(-15)(-3)
+45
300
The words below, withdraw, negative mean.
What are negative integers?
300
The temperature dropped 3 degrees every hour for 5 hours. What is the integer that represents the change in temperature.
Write the expression and then answer.
(-3)(+5) = -15 degrees
OR
(-3) + (-3) + (-3) + (-3) + (-3) = -15 degrees
400
(-19) + (+7) + (-9)
-21
400
(-20) - (-16)
-4
400
(+6)(-7) ÷ (-2)
+21
400
Define integers.
Positive or negative whole numbers
400
The high temperature started out as 81 degrees and then dropped 20 degrees at night. What is the temperate at night?
Write an expression and then state the answer.
(+81) + (-20) OR (+81) - (+20) = +61 degrees
500
(+20) + (+15) + (-3)
+32
500
(-21) - (-15) - (+17)
-23
500
(-3)(4)(-5)
+60
500
6 and -6 are examples of what vocabulary term?
Opposite integers
500
The Seal is swimming in the ocean and starts at 5 feet below sea level. It dives down 12 feet to catch a fish. The seal swims 8 feet up to catch another fish. What is the seals final elevation?
Write an expression and then state the answer.
(-5) - (+12) + (+8) OR (-5) + (-12) + (+8)= -9 feet
600
(-22) + (-65) + (+15)
-72
600
(-81) - (-3) - (+20)
-58
600
((-21)/(+7)) x ((+9)(+2))
-54
600
Explain the rules for multiplying and dividing integers.
If the signs are the same it's positive, if the signs are different it's negative
600
Four college roommates rented an apartment together. They spend $1500 each month on rent. The roommates agreed to equally share the cost. What integer represents how much each person will have to pay?
(-$1500)/(+4) = -$375 each per month