Children's songs: 1 Like chalk, 2 like ducks, 3 like ears, 4 like flags, 5 like hooks, 6 like whistles, 7 like silver hoes, 8 like gourds and 9 like tadpoles.
Children's songs: 1 what 1, paste 1. 2 what 2, duck 2. 3 what 3, ears 3. 4 what 4, sailing 4. 5 what 5, hook 5. Six what six, big belly six. 7 what 7, crutch 7. 8 what 8, glasses 8. 9 what 9, balloon 9.
Extended data:
Arabic numerals are composed of counting symbols of 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 * * * 10, which is an international number at present. Arabic numerals were first invented by ancient Indians, then spread to Europe by Arabs, and then modernized by Europeans. Because of the spread of Arabs, it has become a key node in the international use of such numbers, so people call it "Arabic numerals".
Take the position value method, the high position is on the left, the low position is on the right, and the writing is from left to right. With the help of some simple mathematical symbols (decimal point, minus sign, percent sign, etc. ), this system can clearly represent all rational numbers. In order to express extremely large or extremely small numbers, people have created scientific notation on the basis of Arabic numerals.
References:
Baidu encyclopedia Arabic numerals