Order of operations
Two-variable expressions
Area and Perimeter
Exponents
One-variable expressions
100
What does "PEMDAS" stand for?
P = parentheses
E = exponents
M = multiplication
D = division
A = addition
S = subtraction
100
3(y + x) ; use x = 4, y = 0
3(4) = 12
100
What is the area of this football field if the length is 100yd and it is 50yd
A=100yd x 50yd = 1500yd^2
100
What is 2^2?
4
100
4(x) ; x = 12
48
200
What does 8^2 (8 to the power of 2) mean?
8 times itself, or 8*8, or 64.
200
4 + xy ; use x = 7 and y = 3
4 + 21 = 25
200
How much fence do you need for a yard that is 20ft wide and 20ft long.
20 +20+20+20= 80ft
200
What is 33?
27
200
-3y ; use y = -3
9
300
In the expression 6(7 + 9), which step should we start with according to PEMDAS?
7+ 9 = 16
300
8(5 - x) - y ; use x = 3 and y = 12
8(5 - 3) - 12
= 8(2) - 12
= 16 - 12
= 4
300
How much inside space is a yard that is 20ft wide and 20ft long?
20 x 20 = 400ft^2
300
x4; use x = 1
1
300
t/18 ; use t = 0
0
400
Solve: 5(4^2 + 3)
5(16 + 3) = 5*19 = 95
400
(c + d) + 4(c) ; use c = 8, d = 9
(8 + 9) - 4(8)
= 17 + 32
= 49
400
x2(3+4) ; use x = 2
48
400
(5y - y)/2 ; use y = 6
(30 - 6)/2
= 24/2
= 12
500
Solve: 3(x + 9) - 3 ; use x = 4
3(4 + 9) - 3
= 3(13) - 3
= 39 - 3
= 36
500
5(f - h) - 2h ; use h = –1, f = 2
5(2 - -1) - 2(-1)
= 5(2 + 1) + 2
= 5(3) + 2
= 17
500
x(y3) + x ; use x = 2, y = 1
2
500
(50 + g)/g ; use g = 10
6