Solving Percent Problems using Proportions or Equations
Flashcard
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a percent?
Back
A percent is a ratio expressed as a fraction of 100. It represents a part of a whole.
2.
FLASHCARD QUESTION
Front
How do you find a percentage of a number?
Back
To find a percentage of a number, multiply the number by the percentage (in decimal form). For example, to find 25% of 200, calculate 200 x 0.25 = 50.
3.
FLASHCARD QUESTION
Front
What does it mean when we say 'A is B% of C'?
Back
It means that A is the part, B is the percentage, and C is the whole. For example, if 14 is 25% of 56, then 14 is the part, 25% is the percentage, and 56 is the whole.
4.
FLASHCARD QUESTION
Front
How do you set up a proportion to solve a percent problem?
Back
Set up a proportion by writing the part over the whole equal to the percentage over 100. For example, if 14 is 25% of 56, set it up as 14/56 = 25/100.
5.
FLASHCARD QUESTION
Front
What is the formula to find the part when given the whole and the percentage?
Back
The formula is: Part = (Percentage/100) x Whole. For example, to find 25% of 200, use Part = (25/100) x 200 = 50.
6.
FLASHCARD QUESTION
Front
What is the formula to find the whole when given the part and the percentage?
Back
The formula is: Whole = Part / (Percentage/100). For example, if 14 is 25% of a number, the whole is Whole = 14 / (25/100) = 56.
7.
FLASHCARD QUESTION
Front
If 15% of a number is 30, how do you find the number?
Back
Use the formula: Number = Part / (Percentage/100). Here, Number = 30 / (15/100) = 200.
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