PEMDAS
What does the E in PEMDAS stand for?
Exponents
x + 6 = 30
x = 24
The name for the value in a data set that shows up the most
Mode
Name a word that indicates we should multiply in a problem
of, for each, times, etc.
1/4 in decimal form
.25
Name two PEMDAS operations that can be performed in any order
Multiplication and division OR addition and subtraction
6x = 72
x = 12
These two are most commonly used to represent the average of a data set
Mean and median
find an equation for the problem:
Peggy bought three train tickets for $51. How much did each ticket cost?
3x = 17
.80 in fraction form
4/5
solve using PEMDAS:
(-3)2 + 7 x 2
23
5x + 9 = 46
x = 7
Find the median:
8, 4, 9, 1, 10, 5, 3
5
Find an equation for the problem:
The sum of two consecutive even numbers is 22. Find the first number.
x + (x + 2) = 22
Simplify the fraction: 18 / 60
3/10
solve using PEMDAS:
(7 + 8 / 2) x 3
33
(x + 6) / 3 = 20
x = 54
Find the mean:
8, 4, 2, 6
5
Find an equation for the problem:
Jake wants to pull a prank and orders 700 fake spiders. The company gives him 76 extra spiders for free! Unfortunately, half of the spiders got lost in transit. How many spiders did Jake receive in the mail?
(700 + 76) / 2 = x
convert to decimal form: 11/12
.9166666666
solve using PEMDAS:
(3 x (4 + 6) / 5) + 18 / 9
8
6 (x + 4) = 3 (2x + 8)
infinite solutions: x can be any value
Find the range:
24, 8, 10, 13, 20
16
Find equations for the problem:
If the sum of two numbers is 8 and 30 minus their product is 18, find the numbers.
x + y = 8
30 - xy = 18
convert to fraction form: 0.8666666666
13/15