| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.37 |
| Score | 0% | 67% |
Convert 6,985,000 to scientific notation.
| 6.985 x 106 | |
| 0.699 x 107 | |
| 6.985 x 105 | |
| 6.985 x 10-6 |
A number in scientific notation has the format 0.000 x 10exponent. To convert to scientific notation, move the decimal point to the right or the left until the number is a decimal between 1 and 10. The exponent of the 10 is the number of places you moved the decimal point and is positive if you moved the decimal point to the left and negative if you moved it to the right:
6,985,000 in scientific notation is 6.985 x 106
What is the least common multiple of 3 and 9?
| 6 | |
| 9 | |
| 21 | |
| 1 |
The first few multiples of 3 are [3, 6, 9, 12, 15, 18, 21, 24, 27, 30] and the first few multiples of 9 are [9, 18, 27, 36, 45, 54, 63, 72, 81, 90]. The first few multiples they share are [9, 18, 27, 36, 45] making 9 the smallest multiple 3 and 9 have in common.
A tiger in a zoo has consumed 45 pounds of food in 3 days. If the tiger continues to eat at the same rate, in how many more days will its total food consumtion be 135 pounds?
| 6 | |
| 8 | |
| 5 | |
| 9 |
If the tiger has consumed 45 pounds of food in 3 days that's \( \frac{45}{3} \) = 15 pounds of food per day. The tiger needs to consume 135 - 45 = 90 more pounds of food to reach 135 pounds total. At 15 pounds of food per day that's \( \frac{90}{15} \) = 6 more days.
Which of the following is not an integer?
-1 |
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0 |
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1 |
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\({1 \over 2}\) |
An integer is any whole number, including zero. An integer can be either positive or negative. Examples include -77, -1, 0, 55, 119.
The __________ is the greatest factor that divides two integers.
greatest common factor |
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least common multiple |
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greatest common multiple |
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absolute value |
The greatest common factor (GCF) is the greatest factor that divides two integers.