What is the formula to calculate the circumference of a circle?
7th Grade Math STAAR Review

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Mathematics
•
7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Circumference = π × diameter
2.
FLASHCARD QUESTION
Front
How do you calculate the percentage decrease in price?
Back
Percentage decrease = (original price - new price) / original price × 100
3.
FLASHCARD QUESTION
Front
What is simple interest and how is it calculated?
Back
Simple interest = principal × rate × time
4.
FLASHCARD QUESTION
Front
What equation can be used to find the number of additional quarters needed if you have a total amount and a current amount?
Back
Total amount = current amount + (value of each quarter × number of quarters)
5.
FLASHCARD QUESTION
Front
What is the probability of selecting two specific fruits from a bag without replacement?
Back
Probability = (number of favorable outcomes / total outcomes) × (number of favorable outcomes after first selection / total outcomes after first selection)
6.
FLASHCARD QUESTION
Front
What is the value of π (pi) approximately?
Back
π ≈ 3.14
7.
FLASHCARD QUESTION
Front
What is the diameter of a circle?
Back
The diameter is the distance across the circle through its center, equal to twice the radius.
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