Math Honor Society 10/9

Roman Numerals

100

MCXI

1111

200

VI + XIV

6 + 14 = 20 = XX

300

CMLVII

957

400

VI * IX

6 * 9 = 54 = LIV

500

XLIII - XXVI

43 - 26 = 17 = XVII

Shapes

100

Area of a rectangle with side lengths 5ft and 8ft

40 ft²

200

Circumference of a circle with radius 10¹⁰⁰

2π(10¹⁰⁰)

300

Area of a circle with a diameter of 5

6.25π

400

Perimeter of a triangle with legs of length 2

4 + 2sqrt(2)

500

Surface area of a sphere with a radius of 3cm

A = 4πr² = 4π(3cm)² = 36π cm²

What are the odds?

100

Roll a die and get a 3 or above

4/6 = 2/3

200

Roll a 9 sided die and get a 3 or below

3/9 = 1/3

300

Flip 3 coins and get 3 tails

1/8

400

The probability of rolling 2 dice and getting one even number, and the sum of the numbers is 7

2+5, 5+2, 4+3, 3+4, 6+1, 1+6

6/36 = 1/6

500

The probability of rolling 2 dice and getting a product of 6

1*6, 6*1, 3*2, 2*3

4/36 = 1/9

Trivia

100

1, 1, 2, 3, 5, 8, 13, ...

Fibonacci Sequence

200

Invented the first number system

Sumerians in Mesopotamia

300

The only two consecutive prime numbers

2 and 3

400

Only number in alphabetical order

Forty

500

One gigaannum

10⁹ years

Math 24

100

1, 1, 4, 8

4-1=3

1*8=8

8*3=24

200

5, 5, 7, 7

7+5=12

7-5=2

12*2=24

300

4, 7, 8, 8

8-4=4

7-4=3

8*3=24

400

2, 2, 5, 8

8+5=13

13*2=26

26-2=24

500

3, 3, 5, 7

3*5=15

15-7=8

8*3=24