Properties
What is communtative property
seven less than a number
n - 7
The product of 4 and a number is 16
4n = 16
Sam bought two magazines for $5.00 and some erasers that cost $1.00 each. He could only spend $25.00. How many erasers could he buy?
Write Equation and solve
$5.00 + $1.00 (e) = $25.00
e = 20
15x < 15
x <1
we can write (12 x 7) x 8 or 12 x (7 x 8)
What is associative property
the product of six and a number
6n
Three less than a number is twenty
n - 3 = 20
The sum of three consecutive numbers is 75. What is the smallest of these numbers?
Equation and solve
n + n+1 + n+2 =75
3n + 3 = 75
n= 24
-10 a < -70
a > 7
32 x 1 = 32
What is identity property
12 more than a number
12 + n
a number divided by 10 is 11
n/10 = 11
Tiffany won 40 super bouncy balls playing Skee Ball at the fair. Later, she gave 3 to each of her friends. She only has 7 remaining. How many friends does she have?
Write and solve an equation
40 - 3f = 7
f=11
- 4 x m > 20
m <-5
6(8-5) is the same as 48 - 30
What is distributive property
fifteen less than a number
n - 15
The product of 5 and a number is 25
5n = 25
Mrs. Easterday had some candy to hive her students. She first took ten pieces for herself and then evely divided the rest among her students. Each student received two pieces. If she started with 50 pieces of candy, how many students does she teach?
Write an equation and solve
50-10=n/2
n=20
Andrew had $20 to spend at the fair. If he paid $5 to get into the fair, and rides cost $2 each, what is the maximum number of rides he could go on?
Write inequality and solve
5 + 2r < 20
r < 7.50 - He could go on 7 rides
(3 + 4) + 5 can also be written as 3 + (4 + 5)
What is associative property
a number divided by twelve
n / 12
fourteen divided by a number is two
14/n = 2
The cooking club made cakes to sell at a baseball game to raise money for the school library. The cafeteria contributed 5 cakes to the sale. Each cake was then cut intoo 10 pieces and sold. There were a total of 80 pieces to sell. How many cakes did the cub make?
Write an equation and solve
5 + n = 80/10
5 + n = 8
n=3
A Taxi service charges a $2.00 flat rate and an additional .55 per mile. Sofia only had $10 to spend on a taxi ride. What is the farthest she can ride without going over her limit?
Write an inequality and solve
2.00 + .55m < 10.00
.55m < 8
m < 14.5