Calculating Actual Lengths from Scale Drawings Using Ratios and Proportions

Interactive Video
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Mathematics
•
6th - 8th Grade
•
Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a ratio?
A type of geometric shape
A method to solve equations
An equation that relates two equal ratios
A comparison between two numbers
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a correct proportion?
3/4 = 6/8
5/6 = 10/12
7/8 = 14/15
2/3 = 4/5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you solve a proportion by equating ratios?
By adding the numerators
By equating the cross products
By dividing the denominators
By subtracting the means
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of cross-multiplying in solving proportions?
To simplify the equation
To find the mean of the numbers
To add the numerators and denominators
To equate the products of the extremes and means
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is cross-multiplying useful?
It eliminates the need for division
It works only with round numbers
It simplifies complex equations
It is effective even with non-round numbers
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the scale model problem, what does 1 inch represent?
10 actual feet
15 actual feet
20 actual feet
25 actual feet
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How long should the scale model be if the actual length is 225 feet?
12 inches
10 inches
18 inches
15 inches
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