RU Percent Proportions
Flashcard
•
Mathematics
•
6th - 8th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the formula to calculate the percentage of correct answers on a test?
Back
Percentage = (Number of Correct Answers / Total Number of Answers) x 100
2.
FLASHCARD QUESTION
Front
If a baseball pitcher won 80% of his games and pitched 35 games, how do you calculate the number of games won?
Back
Games Won = Total Games x Winning Percentage = 35 x 0.80 = 28
3.
FLASHCARD QUESTION
Front
How do you find the original number if you know a percentage of it?
Back
Use the formula: Original Number = Given Number / (Percentage / 100). For example, if 114 is 80% of a number, then the number is 114 / 0.80 = 142.5.
4.
FLASHCARD QUESTION
Front
In a class of 28 students, if 16 are males, how do you calculate the percentage of females?
Back
Percentage of Females = (Number of Females / Total Students) x 100. Number of Females = 28 - 16 = 12, so Percentage = (12 / 28) x 100 = 43%.
5.
FLASHCARD QUESTION
Front
What is the formula to calculate the weight of a component in a mixture if you know the total weight and the percentage?
Back
Weight of Component = Total Weight x (Percentage / 100). For example, for a metal bar weighing 8.15 ounces with 93% silver, Weight of Silver = 8.15 x 0.93 = 7.58 oz.
6.
FLASHCARD QUESTION
Front
What does it mean if a number is described as a percentage of another number?
Back
It means that the first number is a fraction of the second number, expressed in terms of 100. For example, 80% means 80 out of 100.
7.
FLASHCARD QUESTION
Front
How do you convert a percentage to a decimal?
Back
To convert a percentage to a decimal, divide the percentage by 100. For example, 80% becomes 0.80.
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