| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.28 |
| Score | 0% | 66% |
Which of the following is not an integer?
-1 |
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0 |
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\({1 \over 2}\) |
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1 |
An integer is any whole number, including zero. An integer can be either positive or negative. Examples include -77, -1, 0, 55, 119.
A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 40% off." If Damon buys two shirts, each with a regular price of $34, how much money will he save?
| $10.20 | |
| $5.10 | |
| $13.60 | |
| $11.90 |
By buying two shirts, Damon will save $34 x \( \frac{40}{100} \) = \( \frac{$34 x 40}{100} \) = \( \frac{$1360}{100} \) = $13.60 on the second shirt.
This property states taht the order of addition or multiplication does not mater. For example, 2 + 5 and 5 + 2 are equivalent.
commutative |
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PEDMAS |
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distributive |
|
associative |
The commutative property states that, when adding or multiplying numbers, the order in which they're added or multiplied does not matter. For example, 3 + 4 and 4 + 3 give the same result, as do 3 x 4 and 4 x 3.
If a mayor is elected with 70% of the votes cast and 66% of a town's 50,000 voters cast a vote, how many votes did the mayor receive?
| 18,150 | |
| 27,390 | |
| 25,080 | |
| 23,100 |
If 66% of the town's 50,000 voters cast ballots the number of votes cast is:
(\( \frac{66}{100} \)) x 50,000 = \( \frac{3,300,000}{100} \) = 33,000
The mayor got 70% of the votes cast which is:
(\( \frac{70}{100} \)) x 33,000 = \( \frac{2,310,000}{100} \) = 23,100 votes.
A triathlon course includes a 500m swim, a 20.2km bike ride, and a 8.0km run. What is the total length of the race course?
| 62km | |
| 62.3km | |
| 33.3km | |
| 28.7km |
To add these distances, they must share the same unit so first you need to first convert the swim distance from meters (m) to kilometers (km) before adding it to the bike and run distances which are already in km. To convert 500 meters to kilometers, divide the distance by 1000 to get 0.5km then add the remaining distances:
total distance = swim + bike + run
total distance = 0.5km + 20.2km + 8.0km
total distance = 28.7km