Roman numerals 1 to 10, and 1001000, and so on, how to write ah, and 0

Roman numerals 1 to 10, and 1001000, and so on, how to write ah, and 0

1 to 10 are: I, II, III, IV, V, VI, VII, VIII, IX, X
100 C
1000M
The Roman numeral has no zero
Roman numeral is a less used way to express quantity. It came into being later than the numbers in Chinese oracle bone inscriptions and even later than the decimal numbers of Egyptians. However, it marked the progress of an ancient civilization. About 2500 years ago, the Romans were still in the early stage of cultural development, At that time, they used fingers as calculation tools. In order to represent one, two, three and four objects, they stretched out one, two, three and four fingers respectively; five objects stretched out one hand; ten objects stretched out two hands. This habit has been used by human beings to this day. People often use this gesture to represent numbers in conversation, In order to record these numbers, the Romans drew I, II and III on the sheepskin instead of the number of fingers; to represent one hand, it was written in the shape of "V", which means the open shape of the big finger and index finger; to represent two hands, it was painted in the shape of "V V", and later it was written in the shape of "X" with one hand up and one hand down, which is the rudiment of roman numbers
Later, in order to represent a larger number, the Romans used the symbol C for 100. C is the first letter of the Latin word "century", which means 100. M is the first letter of the Latin word "Mile", which means 1000. Take half of the letter C as the symbol L, which means 50, In this way, Roman numerals have the following seven basic symbols: I (1) V (5) x (10) l (50) C (100) d (500) m (1000)
Roman numeral is different from decimal numeral in meaning. It does not represent zero and has nothing to do with carry system. The basic method of using Roman numeral to represent number is to write several Roman numeral into a column, and the number it represents is equal to the sum of the numbers represented by each number, For example: Ⅲ = 3, Ⅳ = 4, Ⅵ = 6, ⅩⅨ = 19, ⅩⅩ = 20, Ⅹ L Ⅴ = 45, MCM ⅩⅩ C = 1980. Roman numerals are rarely used because of the complexity of writing. It is still used to represent hours on the surface of some clocks and watches. In addition, Roman numerals are also used in manuscript chapters and scientific classification

Fill in the brackets with the appropriate number 0.7 = 10 parts () = 100 parts () = ()% 2.086 = 1000 parts () = 100 parts () = ()%
35% = 7 out of 100 = () (fill in decimal)
565.6% = 100 parts () = () (fill in decimal)

0.7 = 10 (7) = 100 (70) = (70)%
086 = 1000 (2086) = 100 (208.6) = (208.6)%
35% = 7 out of 100 = (0.35) (fill in decimal)
565.6% = 100% (565.6) = (5.656) (fill in decimal)

Fill in the brackets with the appropriate units. A barrel of peanut oil has 10 () and a wooden case covers 0.45 ()

Liter, square meter