| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.10 |
| Score | 0% | 62% |
A bread recipe calls for 3\(\frac{3}{8}\) cups of flour. If you only have \(\frac{1}{8}\) cup, how much more flour is needed?
| 3\(\frac{1}{4}\) cups | |
| 3\(\frac{3}{8}\) cups | |
| \(\frac{7}{8}\) cups | |
| 1\(\frac{3}{4}\) cups |
The amount of flour you need is (3\(\frac{3}{8}\) - \(\frac{1}{8}\)) cups. Rewrite the quantities so they share a common denominator and subtract:
(\( \frac{27}{8} \) - \( \frac{1}{8} \)) cups
\( \frac{26}{8} \) cups
3\(\frac{1}{4}\) cups
If all of a roofing company's 4 workers are required to staff 2 roofing crews, how many workers need to be added during the busy season in order to send 7 complete crews out on jobs?
| 16 | |
| 2 | |
| 10 | |
| 11 |
In order to find how many additional workers are needed to staff the extra crews you first need to calculate how many workers are on a crew. There are 4 workers at the company now and that's enough to staff 2 crews so there are \( \frac{4}{2} \) = 2 workers on a crew. 7 crews are needed for the busy season which, at 2 workers per crew, means that the roofing company will need 7 x 2 = 14 total workers to staff the crews during the busy season. The company already employs 4 workers so they need to add 14 - 4 = 10 new staff for the busy season.
Which of the following is not an integer?
-1 |
|
1 |
|
\({1 \over 2}\) |
|
0 |
An integer is any whole number, including zero. An integer can be either positive or negative. Examples include -77, -1, 0, 55, 119.
The total water usage for a city is 50,000 gallons each day. Of that total, 22% is for personal use and 32% is for industrial use. How many more gallons of water each day is consumed for industrial use over personal use?
| 4,800 | |
| 5,000 | |
| 6,600 | |
| 4,350 |
32% of the water consumption is industrial use and 22% is personal use so (32% - 22%) = 10% more water is used for industrial purposes. 50,000 gallons are consumed daily so industry consumes \( \frac{10}{100} \) x 50,000 gallons = 5,000 gallons.
The __________ is the smallest positive integer that is a multiple of two or more integers.
least common factor |
|
absolute value |
|
greatest common factor |
|
least common multiple |
The least common multiple (LCM) is the smallest positive integer that is a multiple of two or more integers.