| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.65 |
| Score | 0% | 73% |
A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 20% off." If Roger buys two shirts, each with a regular price of $41, how much money will he save?
| $2.05 | |
| $12.30 | |
| $8.20 | |
| $20.50 |
By buying two shirts, Roger will save $41 x \( \frac{20}{100} \) = \( \frac{$41 x 20}{100} \) = \( \frac{$820}{100} \) = $8.20 on the second shirt.
What is \( \frac{4}{6} \) ÷ \( \frac{1}{8} \)?
| \(\frac{8}{27}\) | |
| \(\frac{1}{4}\) | |
| \(\frac{4}{45}\) | |
| 5\(\frac{1}{3}\) |
To divide fractions, invert the second fraction and then multiply:
\( \frac{4}{6} \) ÷ \( \frac{1}{8} \) = \( \frac{4}{6} \) x \( \frac{8}{1} \)
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{4}{6} \) x \( \frac{8}{1} \) = \( \frac{4 x 8}{6 x 1} \) = \( \frac{32}{6} \) = 5\(\frac{1}{3}\)
Which of the following is not an integer?
\({1 \over 2}\) |
|
0 |
|
-1 |
|
1 |
An integer is any whole number, including zero. An integer can be either positive or negative. Examples include -77, -1, 0, 55, 119.
Which of the following is not a prime number?
7 |
|
9 |
|
2 |
|
5 |
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.
4! = ?
5 x 4 x 3 x 2 x 1 |
|
3 x 2 x 1 |
|
4 x 3 |
|
4 x 3 x 2 x 1 |
A factorial has the form n! and is the product of the integer (n) and all the positive integers below it. For example, 5! = 5 x 4 x 3 x 2 x 1 = 120.