| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.61 |
| Score | 0% | 72% |
If a car travels 315 miles in 9 hours, what is the average speed?
| 75 mph | |
| 55 mph | |
| 35 mph | |
| 15 mph |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)Which of the following is not a prime number?
2 |
|
5 |
|
7 |
|
9 |
A prime number is an integer greater than 1 that has no factors other than 1 and itself. Examples of prime numbers include 2, 3, 5, 7, and 11.
What is \( \frac{3}{8} \) ÷ \( \frac{2}{6} \)?
| 9 | |
| \(\frac{8}{63}\) | |
| 1\(\frac{1}{8}\) | |
| \(\frac{3}{20}\) |
To divide fractions, invert the second fraction and then multiply:
\( \frac{3}{8} \) ÷ \( \frac{2}{6} \) = \( \frac{3}{8} \) x \( \frac{6}{2} \)
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{3}{8} \) x \( \frac{6}{2} \) = \( \frac{3 x 6}{8 x 2} \) = \( \frac{18}{16} \) = 1\(\frac{1}{8}\)
Which of these numbers is a factor of 32?
| 4 | |
| 32 | |
| 25 | |
| 22 |
The factors of a number are all positive integers that divide evenly into the number. The factors of 32 are 1, 2, 4, 8, 16, 32.
Which of the following is not an integer?
\({1 \over 2}\) |
|
-1 |
|
0 |
|
1 |
An integer is any whole number, including zero. An integer can be either positive or negative. Examples include -77, -1, 0, 55, 119.