Two, two

Three, three

The fourth chapter section 4

Chapter five, section five

Chapter 6, section 6

Chapter 7, section 7

Chapter 8, section 8

Nine, nine

x， 10

XI， 1 1

Twelve, 12

Thirteen, 13

Fourteen, 14

XV. 15

Sixteen, 16

Seventeen, 17

Eighteen, 18

XIX. 19

XX，20

21,21

22, 22

25, 25

29, 29

XXX，30

XXXI，3 1

34, 34

Thirty-five

39, 39

XL，40

l，50

Li, 5 1

Lu, 55 years old

LX，60

Sixty-five

LXX 70

LXXX，80

XC, 90 years old

XCIII，93

XCV，95

XCVIII，98

Integrated circuit, 99

c， 100

CC，200

CCC，300

CD，400

500 dollars

DC，600

DCC，700

DCCC，800

Centimeter, 900

m， 1000

MC， 1 100

MCD， 1400

MD， 1500

MDC， 1600

MDCLXVI， 1666

MDCCCLXXXVIII， 1888

MDCCCXCIX， 1899

MCM， 1900

MCMLXXVI， 1976

Michael XXXIV, 1984

MCMXC， 1990

Well, in 2000.