Ratios And Rates Worksheet - Chapter 3 Page 11
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3811.
Park rangers captured, tagged and released 82 grizzly bears. A
month later, the rangers captured 20 bears, two of which had
tags. Estimate the park’s grizzly bear population.
Lucas is 9 years old and 129 cm tall. Medical charts show that
12.
3
a boy’s height at age 9 is
of his predicted adult height.
4
Predict Lucas’s adult height.
Using a ratio, compare two related quantities or measurements
13.
you find in a newspaper article, on the Internet, or on TV.
Describe the ratio and explain why it is actually a ratio.
14.
George rolled a die 30 times, with these results.
Roll of
How many times
4
5
6
5
8
2
8
Explain how
describes the experimental probability of
a)
3
0
rolling a 5. What sort of ratio is it?
b)
Write a part-to-part ratio to compare the rolls of 5 to the
rolls of 1.
Are any other part-to-part ratios equivalent to the ratio in
c)
part b)?
Suppose George were to roll a die 10 times instead of 30.
d)
About how many rolls would you expect for each number?
Explain.
15.
Describe a situation you might represent with each ratio.
3
a)
b)
9 : 20
6
0
2
16.
The sides of a rectangle with an area of 192 cm
are in the
ratio 3 : 4. What are the side lengths?
17.
A ratio can be called a multiplicative comparison of two
amounts. Why is a ratio about multiplication?
112
Chapter 3
NEL
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