Exponents
In the expression:
84
What is the exponent?
What phrase/letters help you remember the order operations?
GEMDAS
Evaluate the expression:
50 + m
for m=20
70
What is a variable represented by?
a letter
What does the A stand for in GEMDAS?
addition
In the expression:
84
What is the base?
8
Do you add, subtract, or divide first? 5+(8-3)÷9
Subtract (grouping symbols)
Evaluate the expression:
9n
for n=5
45
What is the variable in this expression? d-6
d
What does the S stand for in GEMDAS?
subtraction
Read/say this expression using repeated multiplication (an exponent):
7⋅7
72 ("7 squared, 7 to the power of 2, 7 to the second power")
What are the 2 last things you do in the order of operations?
addition and subtraction
Evaluate the expression:
p + 3p
for p=7
28
What is the variable? g-5+g
g
What operation do you calculate first, according to GEMDAS?
grouping symbols
What is another way to read/say this expression?
x2
"x squared," "x to the power of 2", or "x to the second power"
Evaluate: 3 + 52
28
Evaluate the expression:
7+c3
for c=2
15
What are the variables? r - 4 ÷ r + z
r and z
What does the E stand for in GEMDAS?
exponents
The area of a square is s2, where s is the side length. Find the area of a square with side length 5 units.
25
What are the 2 groups in the order of operations that you go from left to right on?
addition and subtraction, and multiplication and division
Evaluate the expression:
2r2+s2
for r=7 and s=6
134
What are the variables? t + x ÷ y
t, x, and y
What do you calculate first, according to GEMDAS - multiplication or division?
Which ever one comes first in the problem when reading from left to right.