Savvas 7th Grade Topic 3

Flashcard
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Mathematics
•
7th Grade
•
Hard
+1
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the formula to calculate 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 20% of 50, calculate 50 * 0.20 = 10.
Tags
CCSS.6.RP.A.3C
2.
FLASHCARD QUESTION
Front
How do you calculate the total cost including tax?
Back
To calculate the total cost including tax, multiply the original price by the tax rate (in decimal form) and then add that amount to the original price. For example, if a meal costs $22.50 and the tax is 9%, the total cost is $22.50 + ($22.50 * 0.09) = $24.53.
Tags
CCSS.6.RP.A.3C
3.
FLASHCARD QUESTION
Front
What does it mean to find a percentage of a total?
Back
Finding a percentage of a total means determining how much a certain percentage represents out of the whole. For example, if you read 65% of a 220-page book, you have read 0.65 * 220 = 143 pages.
Tags
CCSS.6.RP.A.3C
4.
FLASHCARD QUESTION
Front
How do you calculate a discount on an item?
Back
To calculate a discount, multiply the original price by the discount rate (in decimal form) and subtract that amount from the original price. For example, if an item costs $36.80 and is 40% off, the discount is $36.80 * 0.40 = $14.72, so the sale price is $36.80 - $14.72 = $22.08.
Tags
CCSS.6.RP.A.3C
5.
FLASHCARD QUESTION
Front
What is the relationship between height and distance in a long jump?
Back
In a long jump, the distance jumped can be expressed as a percentage of the jumper's height. For example, if a person can jump 195% of their height, and their height is 50 inches, the jump distance is 50 * 1.95 = 97.5 inches.
Tags
CCSS.8.EE.C.7B
6.
FLASHCARD QUESTION
Front
How do you find the total height of a mountain if you know the distance hiked and the percentage of the way up?
Back
To find the total height of a mountain, divide the distance hiked by the percentage (in decimal form). For example, if someone hikes 190.5 meters and is 62% of the way up, the total height is 190.5 / 0.62 = 307 meters.
Tags
CCSS.7.EE.B.3
7.
FLASHCARD QUESTION
Front
What is the formula for calculating the percentage of a part compared to a whole?
Back
The formula is (part/whole) * 100%. For example, if you have read 143 pages of a 220-page book, the percentage read is (143/220) * 100% = 65%.
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