MATHCOUNTS 2023 Countdown #21-30
Authored by Brynn Reese
Mathematics
6th - 8th Grade
CCSS covered
Used 3+ times
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10 questions
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1.
OPEN ENDED QUESTION
1 min • 1 pt
Avery buys a pair of shoes for $34.00, not including sales tax. If this price is discounted by 15% from the original price, what the original price in dollars? Express your answer to the nearest dollar.
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Tags
CCSS.6.RP.A.3C
2.
OPEN ENDED QUESTION
1 min • 1 pt
The quiz scores of the 17 students in an algebra class are shown in this stem-and-leaf plot, where 8 | 2 represents a score of 82. What was the median quiz score for this class?
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Tags
CCSS.6.SP.A.2
CCSS.6.SP.A.3
CCSS.6.SP.B.5
3.
OPEN ENDED QUESTION
1 min • 1 pt
A paper bill of any US denomination has a mass of 1 gram. What is the mass of $1,000,000 worth of 100 dollar bills, in kilograms?
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Tags
CCSS.5.MD.A.1
4.
OPEN ENDED QUESTION
1 min • 1 pt
What is the units digit of 3^75?
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Tags
CCSS.HSF-IF.C.8B
5.
OPEN ENDED QUESTION
1 min • 1 pt
Jeremy has been wearing a hat for n years. If he wears it for six more years, he will have work the hat for 6^2 years. How many years has Jeremy been wearing his hat?
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Tags
CCSS.8.EE.A.2
6.
OPEN ENDED QUESTION
1 min • 1 pt
The quantity 60 is 320% of what number? Express your answer as a decimal to the nearest hundredth.
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Tags
CCSS.6.RP.A.3C
7.
OPEN ENDED QUESTION
1 min • 1 pt
Consider the set of all positive integers less than 50 that are divisible by 3. What is the mean of the set? Express your answer as a decimal to the nearest tenth.
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Tags
CCSS.7.EE.B.3
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