| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.15 |
| Score | 0% | 63% |
The total water usage for a city is 10,000 gallons each day. Of that total, 11% is for personal use and 31% is for industrial use. How many more gallons of water each day is consumed for industrial use over personal use?
| 3,900 | |
| 2,000 | |
| 5,600 | |
| 3,600 |
31% of the water consumption is industrial use and 11% is personal use so (31% - 11%) = 20% more water is used for industrial purposes. 10,000 gallons are consumed daily so industry consumes \( \frac{20}{100} \) x 10,000 gallons = 2,000 gallons.
What is \( \frac{1}{5} \) x \( \frac{2}{9} \)?
| \(\frac{2}{9}\) | |
| \(\frac{2}{45}\) | |
| \(\frac{2}{5}\) | |
| \(\frac{1}{18}\) |
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{1}{5} \) x \( \frac{2}{9} \) = \( \frac{1 x 2}{5 x 9} \) = \( \frac{2}{45} \) = \(\frac{2}{45}\)
The __________ is the greatest factor that divides two integers.
least common multiple |
|
absolute value |
|
greatest common multiple |
|
greatest common factor |
The greatest common factor (GCF) is the greatest factor that divides two integers.
A bread recipe calls for 2 cups of flour. If you only have \(\frac{7}{8}\) cup, how much more flour is needed?
| 1\(\frac{1}{8}\) cups | |
| 1\(\frac{7}{8}\) cups | |
| 2\(\frac{1}{4}\) cups | |
| 1\(\frac{3}{4}\) cups |
The amount of flour you need is (2 - \(\frac{7}{8}\)) cups. Rewrite the quantities so they share a common denominator and subtract:
(\( \frac{16}{8} \) - \( \frac{7}{8} \)) cups
\( \frac{9}{8} \) cups
1\(\frac{1}{8}\) cups
| 6.0 | |
| 1.6 | |
| 2.0 | |
| 1 |
1