六年级和五年级书上有这些,你不会去查啊?1 one first 2 two second 3 three third 4 four fourth 5 five fifth 6 six sixth 7 seven seventh 8 eight eighth 9 nine ninth 10 ten tenth 20 twenty twentieth 30 thirty thirtieth 40 fourty fortieth 50 fifty fiftieth 60 sixty sixtieth 70 seventy seventieth 80 eighty eightieth 90 ninety ninetieth 100 one hundred one hundredth