Vocabulary
What does it mean to "cube" a number?
MULTIPLY it by itself 3 times
2x = 12
Two times a number equals 12
A number minus 7 is eighty-eight
x - 7 = 88
A number plus 9 equals 45
x = 36
Mr. Klein has some number of markers. Ms. Gingrich has 45 markers. Together they have 100 markers.
m + 45 = 100
Mr. Klein has 55 markers
If you "find the difference" between two numbers what do you do?
Subtract
x - 15 = 100
15 less than a number is 100
or
a number minus 15 is 100
The product of 12 and a number is 60
12x = 60
2 times a number minus five is 15
x = 10
You and three other friends split the cost of dinner equally. Each person ends up paying $12.00.
d/4 = 12
What do we do if it says "split in half"?
Divide by 2
20 = 5x + 2
20 equals 5 times a number plus 2
A number split in half is the same as 150
x/2 = 150
A number split in half plus 3 is ten
x = 14
You and a friend go on a road trip for 3 days. You spend x dollars a night for a hotel room. You also spent $8 a day on gas and $10 a day on food. You spent a total of $180. Write an equation.
3(x + 8 + 10) = 180
or simplified to 3x + 54 = 180
What does it mean to "find the product" of two numbers?
Multiply them
x/4 = 500
A number divided by 4 is 500
Ninety-nine equals the quotient of a number and 3
99 = x/3
The sum of 10 and a number minus 4 equals 30
r = 24
Timmy had a big bag of Reese's. He split them with his friend Billy. He then gave 10 to his girl friend. At the end of the day he had 8 Reese's left. Write an equation.
c / 2 - 10 = 8
What does it mean to "find the quotient" of two numbers?
Divide them
9 + 6 + x = 35
The sum of 9, 6, and a number equals 35
The sum of 4, 8, and a number is twenty-six
4 + 8 + x = 26
10 less than a number times 2 equals 6
x = 8
It costs $3.50 per game to bowl. You also pay a one time fee of $4.00 for shoes. Your total was $14.50. Write an equation.
3.5b + 4 = 14.50