the cost of ten yo-yos if each costs three dollars.
10 x 3
two miles less than the athlete ran.
a-2
a = miles ran
-4 -12
-16
14 + (9+10) = (14+9) + 10
APA
5 + e
when e = 13
18
the number of students in each group if fifteen students are divided into five equal groups
15/5
twenty-four pieces of candy divided among some students
24/s
s= number of students.
18 + (-28) - 10
-20
8 * 1 = 8
MI
5x + 13 + y
when x=5 and y = 17
55
the number of weeks until vacation if vacations is twenty-eight days away.
28/7
Four more than the number of weeks in a group of days.
n/2 +4
0
5 x 7 x 2 = 7 x 2 x 5
CPM
Simplify using properties: 3 + (8 + k)
(Make sure to say which property you used.)
11 + k
APA
the number of people left to play if ten of fifteen have played.
15-10
Four less than the amount of cents in a number of dimes
10n - 4
3[(20-7)+1]
42
5k x 1
Multiplicative Identity (MI)
Simplify using properties: 8 * (x *11)
(Don't forget to name your properties at each step.)
88x
1st CPM
2nd APM
A cell phone company charges $20 per month and $0.15 for each call made or received. Write an expression to represent what the cell phone company charges. (Don't forget to define your variable).
20 + 0.15x
x=number of calls made.
One gallon of water is equal to 231 cubic inches. Write an expression for the number of gallons of water in any number of cubic inches of water.
w/231
36
7 + (x +11) = (7+11) +x
1st- CPA
2nd- APA
Is the following statement true or false?
15 + (4 *6) = (15 +4) *6
False, using the associative property requires that if you move grouping symbols the operation must be the same.