Adding
Find the sum
(-6)+(+18)
12
3 - (-9) =
12
abs(-8)
8
Adding Integers: A football team loses 5 yards on one play and then loses 8 yards on the next play. How many yards did they lose on the two plays?
They lost 13 yards
-13
What is the rule for adding integers with the same sign?
a) The answer is always positive
b) Add the opposite
c) Add and keep the sign
C) add and keep the sign the same.
(5/8)-(2/8)
3/8
-14 + -8 =
=-22
-19 - ( 15) =
-34
abs(8-10)
2
Adding Integers: You park in a garage 3 floors below ground level. Then you get in the elevator and go up 12 floors. What floor do you get off the elevator?
9th floor
-3 and +3 are called what?
opposites
3/4-(-1/4)
4/4 or 1
-40 + (25) =
-15
? + (-6) = 4
10
abs(8)-abs(-10)
-2
Adding Integers: Stephanie has $152 in the bank. she withdraws $20 then deposits $84. How much does she now have?
216
When adding or subtracting fractions, you must have
Common denominators
6/10+3/5
12/10 or 1 2/10
-5 + (4) - 7
-8
-14 - (14) =
-28
-abs(-7)
7
Julian is conducting a science experiment. The temperature of his solution yesterday was -16 degrees C. The temperature of the solution today is 12 degrees C. If the temperature of the solution changes by the same amount each day, what will its temperature be tomorrow?
40 degrees
Subtracting a negative integer is like...
a) adding a positive integer
b) adding a negative integer
c)subtracting a positive one
Adding a positive integer.
3/8+1/3
(-8)+(-12) - 5 -2
-27
-32 - (-14) =
-18
-abs(8)-abs(-10)
-18
New Guinea, is 5040 m above sea level and Lake Djibouti, is 156m below sea level. What is the difference in elevations of these two locations?
What is (+5040) - (-156) = +5196? or What is (-156) - (+5040) = +5196? The difference is +5196.
How do you find the distance between two numbers?
Subtract and take the absolute value.
3.4 + (-2 1/5)
1.2 or (1 1/5)