Solutions?
7w = 21
Is w = 3 a solution?
7(3) = 21
21 = 21
Solution! :)
v + 29 = 50
v = 21
The total cost of tickets to a basketball game was divided equally among 5 friends. Each friend paid $32. Write an equation and find the total cost of the tickets.
t/5 = 32
t = 160
The total cost was $160.
The inverse operation of division.
What is multiplication?
32 = 18 + y
Is y = 18 a solution?
32 = 18 + 18
32 not equal to 36
Not a solution! :(
6h = 216
h = 36
Mr. C. pledged $4 per book for a read-a-thon and gave Carmen $44. Write an equation and find how many books Carmen read.
4(b) = 44
b = 11
Carmen read 11 books.
Write a related equation using the inverse operation.
n + 300 = 599
599 - 300 = n
g/5 = 25
Is g = 150 a solution?
150/5 = 25
30 is not equal to 25
Not a solution! :(
m - 75 = 55
m = 130
Morgan finished a race in 58 seconds. This was 4 seconds faster than her best practice time. Write an equation and find what his best practice time was before this race.
r - 4 = 58
r = 62
The best practice time used to be 62 seconds.
The two operations where the order is very important!
What are subtraction and division?
r - 49 = 37
Is r = 86 a solution?
86 - 49 = 37
37 = 37
Solution! :)
b/12 = 156
b = 13
You need to sell a total of 25 tickets for a fundraiser. So far, you have sold 9 tickets. Write an equation and find how many more tickets you still need to sell.
9 + k = 25
k = 16
You need to sell 16 more tickets.
Grouping symbols
Exponents
Multiplication/Division
Addition/Subtraction
221 - p = 81
Is p = 160 a solution?
221 - 160 = 81
61 is not equal to 81
Not a solution! :(
187 = 17c
c = 11
A rectangular park has a length of 25 feet. The area of the park is 500 square feet. Write an equation and find the width of the park.
250 = 25(w)
20 = w
The width is 20 feet.
The answers to problems for all four operations are called...
addition > sum
subtraction > difference
multiplication > product
division > quotient