7th Grade Math Review
Flashcard
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What does the score of 2 represent in the context of John's and Kamira's game?
Back
The sum of John's score and Kamira's score.
2.
FLASHCARD QUESTION
Front
If chicken loses 10% of its weight during cooking, how do you calculate the weight of uncooked chicken needed to obtain a specific cooked weight?
Back
To find the uncooked weight, use the formula: Uncooked Weight = Cooked Weight / (1 - Loss Percentage). For 1,170 grams cooked, Uncooked Weight = 1,170 / (1 - 0.10) = 1,300 grams.
3.
FLASHCARD QUESTION
Front
How do you calculate the time it takes for hair to grow a certain length at a given growth rate?
Back
Use the formula: Time (months) = Desired Length (cm) / Growth Rate (cm per 2 months). For 22.5 cm at 2.5 cm per 2 months, Time = 22.5 / 1.25 = 18 months.
4.
FLASHCARD QUESTION
Front
What signed number represents the total loss of yards if a football team loses 5 yards on each of 3 consecutive plays?
Back
The total loss is represented by -5 (3) = -15 yards.
5.
FLASHCARD QUESTION
Front
How do you calculate Julie's hourly rate of pay based on her weekly earnings and hours worked?
Back
Total hours worked = (3 days * 10 hours) + (3 days * 7 hours) = 51 hours. Hourly rate = Total Earnings / Total Hours = $612 / 51 = $12.
6.
FLASHCARD QUESTION
Front
What is the formula for calculating the average of a set of numbers?
Back
Average = (Sum of all values) / (Number of values).
7.
FLASHCARD QUESTION
Front
Define absolute value in mathematics.
Back
Absolute value is the distance of a number from zero on the number line, regardless of direction. It is denoted as |x|.
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