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Variables
Expressions
Number Sets
Properties
PEMDAS
100
Name a variable.
x, y, z, a, b, n, m ... (many answers!)
100
What is an example of a math word you can use to describe addition?
Add, sum, plus, more, extra... (many answers)
100
Name a natural number.
[1, 2, 3, ... ]
100
Any number multiplied by 0 is...
0
100
What does PEMDAS stand for in math terms?
Parentheses, exponents, multiply/divide, add/subtract
200
In algebra, a variable represents an _________ quantity.
unknown
200
How would you write "five times x?"
5x (or 5*x)
200
What is the difference between natural numbers and whole numbers?
Whole numbers include all of the natural numbers AND zero.
200
What is the identity property of addition?
Any number plus 0 will equal that same number. a + 0 = a
200
Solve: 4*3 + 2
14
300
What is the variable in this example: "Evan can do some push-ups. Julia can do 5 more push-ups than Evan."
# of push-ups Evan can do
300
How do you say "15n - 9"
"fifteen times n, minus nine"
300
In decimal form, a rational number will be a decimal that either _______ or __________.
Terminates or repeats
300
What is the commutative property of multiplication?
If you are multiplying numbers, the order doesn't matter. abc = bca = cab = cba
300
Solve: (3+5)(4+4) - 8*8
0
400
What is the opposite of a variable?
A constant
400
How do you say "3x - 2" using the phrase "less than?"
Two less than the product of 3 and x (or two less than 3x)
400
Is the square root of a PERFECT SQUARE going to be rational or irrational?
Rational
400
What is the associative property of addition?
If you are adding some numbers, it doesn't matter how you group them. (a+b) + c = a + (b+c)
400
Solve: (5 * 1 + 2) - 2 * 3
1
500
What happens when you multiply a variable by itself?
You get the square of that variable (x * x = x squared)
500
What is the algebraic expression for "the quotient of 'x minus 5' and 'x plus five'"?
(x-5) / (x+5)
500
An irrational number cannot be represented by the _______ of two ____________. Hint: Think about the word "irrational" - what does it mean?
An irrational number cannot be represented by the quotient of two integers. (Irrational - not a RATIO)
500
What TWO properties can you use to rewrite: "100 + 10 + 20" into "(20 + 100) + 10"
Commutative property of addition Associative property of addition
500
Write out the problem, then solve: "four squared minus the quotient of one and two"
15.5