Vocabulary
This is the name for a letter (like x or y) used to represent an unknown number.
What is a variable?
In the problem 4 + (3 x 2), you must do this part first.
What is (3 x2) or the Parentheses?
Solve for n in n + 5 = 12.
What is 7?
Write an equation for:
"A number x increased by 7 is 20."
What is x + 7 = 20?
Solve for x:
2x + 4 = 14
What is 5?
What does PEMDAS stand for?
What is parenthesis, exponents, multiplication, division, addition and subtraciton?
Solve: 10 X (5 + 2) =
What is 70?
Solve for y in 20/ y = 5
What is 4?
Write an equation for:
"The product of 4 and a number n is 24."
What is 4n = 24
If a = 3 and b = 4,
what is the value of a + b x 2?
What is 11?
(4 x 2 = 8, then 8 + 3 = 11)
This word describes a math sentence that uses an equals sign (=) to show two sides are the same.
What is an equation?
True or False: In PEMDAS, you always add before you subtract, even if subtraction comes first left-to-right.
What is False? (Addition and Subtraction are a team; you go left-to-right).
Solve for z in z - 15 = 25
What is 40?
Write an equation for:
"Double a number y is the same as 50."
What is 2y = 50?
A mystery number is tripled and then 2 is added to get 17. What is the number?
What is 5?
Unlike an equation, this math phrase (like 5 + x) does not have an equals sign.
What is an expression?
(4+5) x 8 - (18-6) x 4 =
What is 24?
Solve for a:
a + a + a = 12 + 6
What is 6?
A rental bike costs $10 plus $2 for every hour (h) it is used. If the total bill was $20, write the equation."
What is 10 + 2h = 20?
Solve for w:
(w / 2) + 10 = 15.
What is 10?
These are two operations that "undo" each other, like addition and subtraction.
What are inverse operations?
Solve the following expression:
2 x [ (12 - 4) / 2 ] + 15
What is 23?
Parentheses first (12-4=8), then the brackets (8 / 2 = 4) then multiply (2 x 4 = 8), and finally add 15.
Solve for w:
50 - w = 15 x 2
What is 20?
Write an equation for this story:
"Marcus started with $50. He bought 3 packs of trading cards that each cost d dollars. Now he has $35 left."
What is 50 - 3d = 35 or 3d +35 = 50?
Solve for n:
(n / 3) + 7 = 15
What is 24?