Maths 1
Maths 2
Maths 3
Mathematicians
Challenges
200

1089 x 9 = ?

1 x 1089 = 1089    9801 = 9 x 1089 = 3^2 x 33^2

2 x 1089 = 2178    8712 = 8 x 1089

3 x 1089 = 3267    7623 = 7 x 1089

4 x 1089 = 4356    6534 = 6 x 1089

5 x 1089 = 5445

200

Round to the nearest hundredth.

4.762

4.76

200

Convert: 8 grams = ___ milligrams

8000 milligrams

200

Where was Gauss born?

Germany

200

7 x 11 x 13 = ?

1001?

Is 12,836,912,170,131,686,611 divisible by 13? Take groups of 3 from right to left, and then add/subtract them in an alternating way: 611 - 686 + 131 - 170 + 912 - 836 + 12 = -26, which is divisible by 13, so the original number is divisible by 13.  This rule works for 7 or 11 as well? why?

400

What is the product of 1/3 and 2/5?

What is 2/15?

400

Write in decimal form: fifty and 8 thousandths

50.008

400

What is 7% as decimal?

0.07

400

What is Newton most known for?

Newton's three laws and Calculus

400

The first 5 digits of Pi are

3.1415926535897932384626433832795028841971693993

75105820974944592307816406286208998628034825342

Ramanujan’s Formula for Pi: pi = 9801/(1103√8) = 3.1415927300 ...

600

If the diameter of a circle is 20 cm. What is the radius?

10cm

600

What is the Greatest Common Factor (GCF) of 39 and 24?

3

600

148 students are going on a field trip. Each bus can carry 40 students. How many buses are needed?

4 buses

600

Described as the first pure mathematician, this Greek taught us that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides.

Pythagoras

600

-40 degrees F = ? degrees C

-40 degrees F = -40 degrees C

( -40 - 32 ) x 5 / 9 = ( -40 + 32) x 9 / 5

800

Write 4 1/3 as an improper fraction

13/3

800

Write 68/8 as a mixed number

8 1/2

800

111,111,111 x 111,111,111 = ?

What is 12,345,678,987,654,321?

800

Name one of the greatest mathematicians of all time.

Euclid, Archimedes, Pythagoras, Newton, Leibniz,

The Bernoullis, Euler, Gauss, Riemann, Poincaré,

Galois, Ramanujan, Gödel

800

Name one of the fields of math.

Algebra, Geometry, Number Theory, Statistics (Probability and Combinations)

1000

Which of the following are prime numbers?

2, 4, 7 , 9 , 12, 15, 24, 29, 31, 39

2, 7, 29, 31

1000

If Trevor came home from work at 3:15 in the afternoon, and he worked 6 hours and 30 minutes. What time did he start work?

8:45am

1000

Write these numbers from Least to Greatest:

0.3, 1/4, 0.16, 1/2, and 0.382

0.16, 1/4, 0.3, 0.382, 1/2

1000

What was the name of Euclid's book?

The Elements

1000

If the Piano key A4 frequency is 440 Hz, what frequency is the key A5, whose tone is one octave higher?

880 Hz