| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.12 |
| Score | 0% | 62% |
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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associative |
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distributive |
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commutative |
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.
A tiger in a zoo has consumed 44 pounds of food in 4 days. If the tiger continues to eat at the same rate, in how many more days will its total food consumtion be 99 pounds?
| 7 | |
| 80 | |
| 5 | |
| 4 |
If the tiger has consumed 44 pounds of food in 4 days that's \( \frac{44}{4} \) = 11 pounds of food per day. The tiger needs to consume 99 - 44 = 55 more pounds of food to reach 99 pounds total. At 11 pounds of food per day that's \( \frac{55}{11} \) = 5 more days.
What is \( \sqrt{\frac{9}{36}} \)?
| 2\(\frac{1}{2}\) | |
| \(\frac{1}{2}\) | |
| 2\(\frac{1}{4}\) | |
| 1\(\frac{4}{5}\) |
To take the square root of a fraction, break the fraction into two separate roots then calculate the square root of the numerator and denominator separately:
\( \sqrt{\frac{9}{36}} \)
\( \frac{\sqrt{9}}{\sqrt{36}} \)
\( \frac{\sqrt{3^2}}{\sqrt{6^2}} \)
\(\frac{1}{2}\)
What is 2\( \sqrt{8} \) x 4\( \sqrt{7} \)?
| 8\( \sqrt{7} \) | |
| 16\( \sqrt{14} \) | |
| 6\( \sqrt{8} \) | |
| 6\( \sqrt{56} \) |
To multiply terms with radicals, multiply the coefficients and radicands separately:
2\( \sqrt{8} \) x 4\( \sqrt{7} \)
(2 x 4)\( \sqrt{8 \times 7} \)
8\( \sqrt{56} \)
Now we need to simplify the radical:
8\( \sqrt{56} \)
8\( \sqrt{14 \times 4} \)
8\( \sqrt{14 \times 2^2} \)
(8)(2)\( \sqrt{14} \)
16\( \sqrt{14} \)
4! = ?
3 x 2 x 1 |
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4 x 3 |
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4 x 3 x 2 x 1 |
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5 x 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.