Countdown Rounds MATHCOUNTS 12/10/24

Raj made $200 doing odd jobs last month. He spent 49% of the money on video game accessories. How many dollars did Raj spend?

• 120
• 98
• 75
• 50

Tags

CCSS.6.RP.A.3C

The sum of three distinct primes is 14. What is the product of these primes?

• 70
• 30
• 42
• 56

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?

• 75
• 85
• 90
• 80

The ratio of Aaron’s monthly wage to Jacy’s monthly wage is 5 to 3. If Aaron’s monthly wage is $3500, what is Jacy’s monthly wage, in dollars?

• 1800
• 2100
• 3000
• 2500

How much less is 1/4 of 2/3 than 3/4 of 1/3 ? Express your answer as a common fraction.

• 1/12
• 1/10
• 1/8
• 1/6

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Dan has a recipe for pancakes. Making 8 pancakes requires 1 1/2 cups of flour. How many cups of flour are needed so that Dan can make 50 pancakes? Express your answer as a mixed number.

• 5 1/2

• 7 3/4

• 9 3/8

• 10 1/2

Tags

CCSS.7.RP.A.1

Bijan bought a bag of gumdrops. He sorted the gumdrops and found that 11 were green, 12 were yellow, 8 were red, and 14 were orange. The remaining 5 gumdrops were black. What percent of the gumdrops were black?

• 10%
• 20%
• 15%
• 5%

Kathy is given 30 doses of medicine and is told to take a single dose on days 1 through 14. Beginning on day 15, Kathy is told to take twice the daily dose each day until she has taken all the medicine. On what day will Kathy take her last dose?

• 25
• 20
• 30
• 22

Tags

CCSS.HSF.BF.A.2

How many positive integers less than 100 are divisible by 11?

• 8
• 7
• 9
• 10

Tags

CCSS.3.OA.D.9

What is the sum of all positive integer factors of 150?

• 372
• 150
• 450
• 300