One Step Equations with Multiplication
3x = 24
x = 8
How do I locate the variable (unknown info) in a word problem?
the question is the variable
5 more than p is 42
What is ....p + 5 = 42?
Keith made 10 free throws on Monday. By Friday, he made a total of 45 free throws. How many did he make Tuesday through Friday?
10 + x = 45
12x = 72
x = 6
After I gather the information (the numbers and the variable), what do I write?
the equation
x increased by 12 is 29
x + 12 = 29
the inverse operation of addition
subtraction
Luke will build a 365 piece puzzle. So far, he has put together 115 pieces. How many pieces does he have left to build?
y + 115 = 365
5x = 45
x = 9
Once I write the equation, what do I do to get the variable by itself?
isolate/circle the variable
t decreased by 5 is equivalent to 95
t - 5 = 95
the inverse operation of division
multiplication
Makayla wants to buy 24 packs of markers. The total cost is $264. How much did each pack of markers cost?
24z = 264
9y = 99
y = 9
use the inverse operation
the product of 3 and x is 24
3x = 24
To get the variable by itself...
Isolate the variable
Camren bought a total of 24 tacos. He ate 5 at Taco Bell and took the rest home. How many did he take home?
x + 5 = 24
11x = 55
Solve: 5x = 35
x = 5
32 increased by Z
32 + z
the opposite of
one math operation
inverse operation
Mya wants to buy a case of Mountain Dew. She gets 12 bottles for $36. How much does each bottle cost?
12g = 36