Unit 7, Lesson 16
Dividing Rational Numbers
Accelerated 6
Practice
Problem 1
Find the quotients:
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\(24 \div \text-6\)
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\(\text-15 \div 0.3\)
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\(\text-4 \div \text-20\)
Problem 2
Find the quotients.
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\(\frac25 \div \frac34\)
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\(\frac94 \div \frac {\text{-}3}{4}\)
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\(\frac {\text{-}5}{7} \div \frac {\text{-}1}{3}\)
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\(\frac {\text{-}5}{3} \div \frac16\)
Problem 3
Is the solution positive or negative?
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\(2\boldcdot x=6\)
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\(\text-2\boldcdot x=6.1\)
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\(2.9 \boldcdot x = \text-6.04\)
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\(\text-2.473\boldcdot x = \text-6.859\)
Problem 4
Find the solution mentally.
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\(3 \boldcdot \text-4 = a\)
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\(b \boldcdot (\text-3) = \text-12\)
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\(\text- 12 \boldcdot c = 12\)
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\(d \boldcdot 24 = \text-12\)
Problem 5
In order to make a specific shade of green paint, a painter mixes \(1\frac12\) quarts of blue paint, 2 cups of green paint, and \(\frac12\) gallon of white paint. How much of each color is needed to make 100 cups of this shade of green paint?
Problem 6
Here is a list of the highest and lowest elevation on each continent.
| highest point (m) | lowest point (m) | |
|---|---|---|
| Europe | 4,810 | -28 |
| Asia | 8,848 | -427 |
| Africa | 5,895 | -155 |
| Australia | 4,884 | -15 |
| North America | 6,198 | -86 |
| South America | 6,960 | -105 |
| Antartica | 4,892 | -50 |
- Which continent has the largest difference in elevation? The smallest?
- Make a display (dot plot, box plot, or histogram) of the data set, and explain why you chose that type of display to represent this data set.