Math ACT Questions
MathCounts Sprint Round
MathCounts Countdown Round
MathCounts Team Round
Math Puzzles
100

A boat is traveling at a speed of 30 miles per hour. What is the boat’s speed in feet per second?

(Note: 1 mile =5,280 feet)

44 ft/s

100

What is the value of x if

3x + 7 = 22?

5

100

Tim’s math homework is on

five consecutive pages in the

math textbook, and the sum of

those page numbers is 630.

What is the page number of the

next page after these five

homework pages?

129

100

What is the probability that

a randomly selected two-digit

positive integer will be a

multiple of 11? Express your

answer as a common fraction.

1/10

100

I am a 3-digit number.
All my digits are even, and they are all different.
The sum of my digits is 12.
My tens digit is larger than my hundreds digit.
If you reverse my digits, the new number is 198 less than the original.

What number am I?

264

200

An admissions office accepts 2 out of every 7 applicants. Given that the school accepted 630 students, how many applicants were NOT accepted?

1575 applicants were not accepted

200

The legs of a right triangle

measure 3/5 inches and 4/5 inches.

In inches, what is the length of

the hypotenuse?

1 (inch)

200

A bag contains 3 red marbles and 4 blue marbles. Three marbles are drawn from the bag at random and without replacement. What is the probability that the marbles drawn will alternate in color, either a red-blue-red sequence or a bluered-blue sequence? Express your answer as a common fraction.

2/7

200

Each of the 2898 students at

Descartes Middle School voted for

his or her favorite meal chosen

from a list of six different meals.

Pia created a circle graph to

represent the data. If a 60-degree

sector of the circle graph represents

votes for pizza, how many students

voted for pizza?

483 students

200

Using only an addition, how do you add eight 8’s and get the number 1000?

888 + 88 + 8 + 8 + 8 = 1000

300

A 3 inch tall rectangular box with a square base is constructed to hold a circular pie that has a diameter of 8 inches. What is the volume, in cubic inches, of the smallest box that can hold this pie?

192 in3

300

What is the greatest prime

factor of the difference 64^2 − 61^2?

5

300

The number 18 can be

written as the sum of nine

consecutive integers. What is

the product of these integers?

0

300

The arithmetic mean of x, 25, 30 and 43 is 35. What is the value of x?

42

300

What should come next in the sequence: 

53,53,40,40, 27, 27

14

400

Given that today is Tuesday, what day of the week was it 200 days ago?

Friday

400

John is 3 years older than

Peter. Ten years ago the sum of

their ages was 59. In years, how

old is John now?

41 years

400

How many distinct factors

of 25! are prime numbers?

9

400
What is Mrs. Folkert's dog's name?

Franklin (Frank or Frankie are also acceptable)

400

If 72 x 96 = 6927, 58 x 87 = 7885, then 79 x 86 = ?

6897

500

At a certain time of day, a flagpole casts a 9.0-foot-long shadow and a nearby 4.0-foot-tall fence post casts a 2.4-foot-long shadow. Given that both the flagpole and the fence post are vertical and on level ground, what is the height, in feet, of the flagpole?

15 ft

500

When the positive integer x

is divided by each of 4, 5 and 6,

it has a remainder of 3. What is

the sum of the three smallest

possible values of x?

189

500

Sharon drives 30 mi at 60 mi/h

and 60 mi at 30 mi/h. What is

Sharon’s average speed, in miles

per hour, for the whole trip?

36 mi/h

500

In the game Yahtzee®, five

standard dice are tossed. What is

the probability that all five dice

show even numbers or all five

show odd numbers? Express

your answer as a common

fraction.

1/16

500

Tom asked his Granny how old she was. Rather than giving him a straight answer, she replied:

"I have 6 children, and there are 4 years between each one and the next. I had my first child (your Uncle Peter) when I was 19. Now the youngest one (Your Auntie Jane) is 19 herself. That's all I'm telling you!"

How old is Tom's Granny?

58