| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.34 |
| Score | 0% | 67% |
Which of the following is not a prime number?
9 |
|
7 |
|
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.
Find the average of the following numbers: 17, 13, 19, 11.
| 13 | |
| 18 | |
| 10 | |
| 15 |
To find the average of these 4 numbers add them together then divide by 4:
\( \frac{17 + 13 + 19 + 11}{4} \) = \( \frac{60}{4} \) = 15
A bread recipe calls for 3\(\frac{3}{4}\) cups of flour. If you only have \(\frac{1}{4}\) cup, how much more flour is needed?
| 3\(\frac{1}{2}\) cups | |
| 1\(\frac{3}{4}\) cups | |
| 1\(\frac{3}{8}\) cups | |
| 2\(\frac{7}{8}\) cups |
The amount of flour you need is (3\(\frac{3}{4}\) - \(\frac{1}{4}\)) cups. Rewrite the quantities so they share a common denominator and subtract:
(\( \frac{30}{8} \) - \( \frac{2}{8} \)) cups
\( \frac{28}{8} \) cups
3\(\frac{1}{2}\) cups
How many 16-passenger vans will it take to drive all 84 members of the football team to an away game?
| 4 vans | |
| 6 vans | |
| 7 vans | |
| 8 vans |
Calculate the number of vans needed by dividing the number of people that need transported by the capacity of one van:
vans = \( \frac{84}{16} \) = 5\(\frac{1}{4}\)
So, it will take 5 full vans and one partially full van to transport the entire team making a total of 6 vans.
A circular logo is enlarged to fit the lid of a jar. The new diameter is 45% larger than the original. By what percentage has the area of the logo increased?
| 20% | |
| 25% | |
| 22\(\frac{1}{2}\)% | |
| 35% |
The area of a circle is given by the formula A = πr2 where r is the radius of the circle. The radius of a circle is its diameter divided by two so A = π(\( \frac{d}{2} \))2. If the diameter of the logo increases by 45% the radius (and, consequently, the total area) increases by \( \frac{45\text{%}}{2} \) = 22\(\frac{1}{2}\)%