What is the main problem discussed in the video?

Understanding Proportions and Cross-Multiplication

Interactive Video
•
Mathematics
•
6th - 10th Grade
•
Hard

Olivia Brooks
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Finding the greatest common divisor
Learning about fractions
Solving a proportion involving 8/36 and 10/n
Understanding algebraic expressions
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What must be done to both the numerator and denominator to maintain an equivalent fraction?
Subtract the same number
Add the same number
Multiply by the same factor
Divide by the same factor
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you determine how much larger the denominator is compared to the numerator?
By adding the numerator to the denominator
By multiplying the numerator by the denominator
By subtracting the numerator from the denominator
By dividing the denominator by the numerator
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of cross-multiplication in solving proportions?
To add fractions
To equate the products of the means and extremes
To find a common denominator
To simplify fractions
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of cross-multiplying 8/36 and 10/n?
8n = 360
8n = 45
n = 36
n = 10
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in using algebra to solve the proportion 8/36 = 10/n?
Divide both sides by 36
Multiply both sides by n
Multiply both sides by 8
Add 10 to both sides
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final value of n when solving the proportion using algebra?
n = 45
n = 10
n = 8
n = 36
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