What is a proportion?
Solving Proportions

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•
Mathematics
•
7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A proportion is an equation that states that two ratios are equal.
2.
FLASHCARD QUESTION
Front
How do you solve a proportion?
Back
To solve a proportion, cross-multiply the terms and then solve for the unknown variable.
3.
FLASHCARD QUESTION
Front
If a/b = c/d, what is the cross-multiplication method?
Back
The cross-multiplication method states that a*d = b*c.
4.
FLASHCARD QUESTION
Front
What is the ratio of sugar to flour in a recipe if it is given as 10:3?
Back
The ratio means for every 10 parts of sugar, there are 3 parts of flour.
5.
FLASHCARD QUESTION
Front
If you have 50 ounces of sugar in a 10:3 ratio, how much flour do you need?
Back
You need 15 ounces of flour.
6.
FLASHCARD QUESTION
Front
What is the formula to find the unknown in a proportion?
Back
If a/b = c/x, then x = (b*c)/a.
7.
FLASHCARD QUESTION
Front
If a 12-ounce bottle lasts 16 weeks, how long will an 18-ounce bottle last?
Back
An 18-ounce bottle will last 24 weeks.
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