| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.88 |
| Score | 0% | 58% |
The __________ is the smallest positive integer that is a multiple of two or more integers.
least common multiple |
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absolute value |
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greatest common factor |
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least common factor |
The least common multiple (LCM) is the smallest positive integer that is a multiple of two or more integers.
On average, the center for a basketball team hits 30% of his shots while a guard on the same team hits 50% of his shots. If the guard takes 10 shots during a game, how many shots will the center have to take to score as many points as the guard assuming each shot is worth the same number of points?
| 11 | |
| 17 | |
| 19 | |
| 13 |
guard shots made = shots taken x \( \frac{\text{% made}}{100} \) = 10 x \( \frac{50}{100} \) = \( \frac{50 x 10}{100} \) = \( \frac{500}{100} \) = 5 shots
The center makes 30% of his shots so he'll have to take:
shots made = shots taken x \( \frac{\text{% made}}{100} \)
shots taken = \( \frac{\text{shots taken}}{\frac{\text{% made}}{100}} \)
to make as many shots as the guard. Plugging in values for the center gives us:
center shots taken = \( \frac{5}{\frac{30}{100}} \) = 5 x \( \frac{100}{30} \) = \( \frac{5 x 100}{30} \) = \( \frac{500}{30} \) = 17 shots
to make the same number of shots as the guard and thus score the same number of points.
What is \( \frac{1}{5} \) ÷ \( \frac{2}{6} \)?
| \(\frac{3}{5}\) | |
| \(\frac{1}{15}\) | |
| 3 | |
| 1\(\frac{1}{5}\) |
To divide fractions, invert the second fraction and then multiply:
\( \frac{1}{5} \) ÷ \( \frac{2}{6} \) = \( \frac{1}{5} \) x \( \frac{6}{2} \)
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{1}{5} \) x \( \frac{6}{2} \) = \( \frac{1 x 6}{5 x 2} \) = \( \frac{6}{10} \) = \(\frac{3}{5}\)
This property states taht the order of addition or multiplication does not mater. For example, 2 + 5 and 5 + 2 are equivalent.
PEDMAS |
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distributive |
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commutative |
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associative |
The commutative property states that, when adding or multiplying numbers, the order in which they're added or multiplied does not matter. For example, 3 + 4 and 4 + 3 give the same result, as do 3 x 4 and 4 x 3.
If there were a total of 100 raffle tickets sold and you bought 6 tickets, what's the probability that you'll win the raffle?
| 16% | |
| 19% | |
| 6% | |
| 13% |
You have 6 out of the total of 100 raffle tickets sold so you have a (\( \frac{6}{100} \)) x 100 = \( \frac{6 \times 100}{100} \) = \( \frac{600}{100} \) = 6% chance to win the raffle.