Math Team - CountDown Practice

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

Tags

CCSS.4.MD.A.2

What percentage of positive integers less than or equal to a hundred are greater than or equal to 50?

Kwame is cutting isosceles right triangles with 6-inch legs from a 30-inch by 30-inch square sheet of plywood. What is the greatest number of triangles of this size he can cut?

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

What is the value of 1¹ + 2² + 3³ + 4⁴ ?

The arithmetic mean of 5, 8, 11, a and b is 9. What is the value of a + b?

The total amount Raven paid for a book was $9.45, which included a 5% sales tax. What was the pre-tax price of the book, in dollars?

Tags

CCSS.4.MD.A.2

What percentage of positive integer divisors of 120 are even?

You have 6 blue shirts, 5 red shirts, 2 white shirts, 9 black shirts, 12 green shirts and 4 yellow shirts. If you randomly select one shirt, what is the probability you select a blue, black, or white shirt? Express your answer as a common fraction.