Vocabulary
The 2x in:
2x+3y=36
Term
Solve:
2x=10
x=5
The 6 in:
6x=30
Coefficient
The inverse to addition
Subtraction
What is the area of a rectangle with a length of 5 cm and a width of 3 cm
15 cm^2
The y in:
5x+2y=40
Variable
Solve
3x+15=30
x=5
The variables in 5a+4b=42
a and b
The inverse to division
Multiplication
If a store is offering 25% off a $20 item, how much will it cost?
$15
The whole math sentence:
4a+2b=12
Equation
Solve:
12x+12=12x+12
x=0
The whole math sentence:
3s>8
Inequality
The inverse to multiplication
Division
Solve -4 + 10
6
The 3r+2s in:
3r+2s=20
Expression
Solve:
8b=72
b=9
The coefficient in 8p-2q=18
8 and 2
The inverse to addition
Subtraction
(-2)3 – 2 + 6 ÷ 3
-8
The 25 in:
5c+25
Constant
Solve:
8k=88+0
k=11
These are operations which undo each other.
What are inverse operations?
The inverse to an exponent
Logarithim
Three out of every five students are wearing jeans. If there are 20 students in all, how many are not wearing jeans?
8