| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.37 |
| Score | 0% | 67% |
What is \( \frac{3}{7} \) ÷ \( \frac{1}{8} \)?
| \(\frac{1}{15}\) | |
| 3\(\frac{3}{7}\) | |
| \(\frac{1}{14}\) | |
| 24 |
To divide fractions, invert the second fraction and then multiply:
\( \frac{3}{7} \) ÷ \( \frac{1}{8} \) = \( \frac{3}{7} \) x \( \frac{8}{1} \)
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{3}{7} \) x \( \frac{8}{1} \) = \( \frac{3 x 8}{7 x 1} \) = \( \frac{24}{7} \) = 3\(\frac{3}{7}\)
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.
A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 20% off." If Charlie buys two shirts, each with a regular price of $44, how much money will he save?
| $11.00 | |
| $2.20 | |
| $13.20 | |
| $8.80 |
By buying two shirts, Charlie will save $44 x \( \frac{20}{100} \) = \( \frac{$44 x 20}{100} \) = \( \frac{$880}{100} \) = $8.80 on the second shirt.
The __________ is the smallest positive integer that is a multiple of two or more integers.
absolute value |
|
least common factor |
|
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.
What is c5 + 3c5?
| 4c5 | |
| 2c-5 | |
| -2c-5 | |
| 2c5 |
To add or subtract terms with exponents, both the base and the exponent must be the same. In this case they are so add the coefficients and retain the base and exponent:
1c5 + 3c5
(1 + 3)c5
4c5