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Abbreviations and complete forms of basic words from one to thirty
Cardinal ordinal number English abbreviation

No.65438 +0 first? 1st

The second two seconds? second

The third three? Third? third

Fourth, fourth, fourth, fourth, fourth

Five or five? Fifth, fifth

Six six? sixth

Seven seven seven seven? Seventh session

Number eight? Eight out of eight? eighth

Number nine? Jiujiujiu

10 ten? Tenth 10

No. 1 1 11? Eleventh 1 1

65438 +02 something else? Twelfth? 12

No. 13 XIII? 13

No. 14 144? 14

No.5 15 No.5 15

No. 16 Sixten? Sixteenth? 16

No. 17 seventen? Seventeen? 17

No. 18

1999No. 19

The 20th? Twentieth session

2 1? Twenty one? Twenty one? 2 1st

Twenty-second. Twenty-second. Twenty-second? 22(nd)

Twenty-third, twenty-third and twenty-third

The 24th? Twenty-four Twenty-fourth? 24th

The 25th? Twenty-five Twenty-five twenty-fifth

Twenty-six Twenty-sixth? 26th

The 27th session

Twenty-eighth. Twenty-eighth? Twenty-eight 28th

Twenty-nine.-Twenty-nine. Twenty-nine? 29 th

Thirty, thirty? Thirty? thirtieth

Extended data:

1) radix representation number.

2) Writing and reading of cardinal words: 345,345; ;

3) The original word is generally singular, but in the following cases, the plural is often used:

A. Used with the phrase of, it means an approximate number, and cannot be used with specific numbers, such as dozens of people means many people;

B in some phrases that mean "a row" or "a group";

They arrived in twos and threes. They arrived in twos and threes.

C. express "dozens of years old" as dozens of years old; ;

D. to express "year", use the plural;

E in a representation of multiplication, such as 3x5 = 15, three to five is (yes) five.

Matters needing attention

(1) The cardinal word 1- 12 is an independent word and needs to be memorized one by one.

The cardinal number 13- 19 consists of single digits, with -teen added after the stem. Thirty, five and eight of them change irregularly.

Primitive words 20-90 are formed by adding -ty after a single digit. Among them, twenty, thirty, forty, five and eight change irregularly.

The radix 2 1-99 is composed of a ten-digit number followed by a single digit number and a hyphen "-"in the middle.

For example: 2 1 21,95 95.

For numbers with more than three digits, between 100 and 10 digits, the conjunction "and" is generally used, between 1 00000 and 1 100000 digits, and between100000 digits. For example: 132, one hungry, three hungry, two hungry, 1340, one hungry, forty hungry.