Order of Operations
When following the order of operations, do you multiply or divide first?
work left to right
If t = 8, what is the value of 9t - 7?
65
A weaver needs 7.8 meters of yarn for one project and 2.6 meters of yarn for a second project. What is the total amount, in meters, the weaver will need for both projects?
10.4 meters
If Peter drove 9 hours at an average speed of 63 miles per hour, how far did he drive?
567 miles
What is the result when like terms are combined in the expression
3a + 4d + a + 2d
4a + 6d
12 ÷ 3 x 12 + 10
58
What is the value of 2y + 3 when y = 4?
11
A teacher buys 8 pencils and pays $2.56. Each pencil costs the same amount. How much does each pencil cost?
$0.32
In chess, Jason won 20 games, tied 8 games, and loss 14 games. What is the ratio of total games to tied games?
42 : 8 or 21: 4
x + 0.6 = 9.38
What is the value of x?
8.78
(9 + 33 – 6 ) ÷ 6 – 3 2
-26
Kerrigan bought 6 boxes of doughnuts to share with her co-workers. All together, she has 72 doughnuts to share. Which equation could be used to determine the number of doughnuts in each box?
a) n x 6 = 72
b) 72 - n = 6
c) 6 + n = 72
d) n/6 = 72
a) n x 6 = 72
The temperature at 9:00 p.m. was 12 degrees Farenheit. The temperature dropped 17 degrees by 5:00 a.m. What was the temperature at 5:00 a.m.?
-5 degrees Farenheit
Three scoops of whey powder contains 45 grams of protein. How many scoops of whey powder contains 135 grams of protein?
9
What is the value of -5 (n - 9)?
-5n + 45
(10 + 59 – 29) ÷( 24 –20)
10
James earns $10.25 per hour at his job. Let h represent the number of hours James works and let w represent his earnings.
w = 10.25h
How much will James earn if he works 32 hours?
$328.00
Last week, an investor's stock portfolio was worth $46,950. The value of the stock portfolio dropped $2,388.50 each week for 4 weeks. What was the value of the stock at the end of the 4 weeks?
$37, 396
Alvin's dog breathed 130 times in 5 minutes. At this rate, how many breaths should his dog take in 60 minutes?
1560
Charles charge $25 per yard to mow yards. If 25x represents the amount of money Charles made last week, what does x represent?
the number of yards he mowed
( 6 + 4 )2 + (11 + 10 ÷ 2 )
116
A newspaper is delivered 5 days per week. It costs David $0.52 per day to have this newspaper delivered to his home. The equation below can be used to find the cost (C), in dollars, to have the newspaper delivered for W weeks?
C = (0.52) (5) (W)
What will it cost David to have the newspaper delivered for 19 weeks?
$49.40
A scuba diver is at an elevation of 53 feet below sea level. A hiker is at an elevation of 228 feet above sea level. What is the difference in the elevation of the scuba diver and the hiker, in feet?
281 feet
Lane went shopping and found the perfect sweater for graduation. The price of the sweater was $44.50. Today, the store has the sweater marked 25% off. What is the final price (not including tax)? If you get a decimal answer at any point, round it to the nearest hundredths place.
$33.37
Jamie is stocking shelves at his store with board games. He splits the board games evenly among 4 shelves. There are 15 boxes on each shelf. Which equation can be used to determine how many board games Jamie arranged on the shelves?
a) 15 - s = 4
b) s/4 = 15
c) s + 4 = 15
d) 4 x s = 15
b) s/4 = 15