| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.60 |
| Score | 0% | 72% |
A bread recipe calls for 3\(\frac{3}{4}\) cups of flour. If you only have 1\(\frac{3}{8}\) cups, how much more flour is needed?
| 3\(\frac{1}{4}\) cups | |
| 2\(\frac{3}{8}\) cups | |
| 1\(\frac{3}{4}\) cups | |
| 2\(\frac{1}{2}\) cups |
The amount of flour you need is (3\(\frac{3}{4}\) - 1\(\frac{3}{8}\)) cups. Rewrite the quantities so they share a common denominator and subtract:
(\( \frac{30}{8} \) - \( \frac{11}{8} \)) cups
\( \frac{19}{8} \) cups
2\(\frac{3}{8}\) cups
This property states taht the order of addition or multiplication does not mater. For example, 2 + 5 and 5 + 2 are equivalent.
distributive |
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PEDMAS |
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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 a car travels 30 miles in 1 hour, what is the average speed?
| 20 mph | |
| 50 mph | |
| 45 mph | |
| 30 mph |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)Find the average of the following numbers: 12, 10, 15, 7.
| 11 | |
| 12 | |
| 16 | |
| 9 |
To find the average of these 4 numbers add them together then divide by 4:
\( \frac{12 + 10 + 15 + 7}{4} \) = \( \frac{44}{4} \) = 11
A factor is a positive __________ that divides evenly into a given number.
mixed number |
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integer |
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improper fraction |
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fraction |
A factor is a positive integer that divides evenly into a given number. For example, the factors of 8 are 1, 2, 4, and 8.