0 nought;zero;O 1 one 2 two 3 three 4 four 5 five 6 six 7 seven 8 eight 9 nine 10 ten 11 eleven 12 twelve 13 thirteen 14 fourteen 15 fifteen 16 sixteen 17 seventeen 18 eighteen 19 nineteen 20 twenty 21 twenty-one 22 twenty-two 23 twenty-three 30 thirty 32 thirty-two 40 forty 50 fifty 60 sixty 70 seventy 80 eighty 90 ninety 100 one hundred 101 one hundred and one 156 one hundred and fifty-six 192 one hundred and ninety-two 200 two hundred 300 three hundred 400 four hundred 500 five hundred 600 six hundred 700 seven hundred 800 eight hundred 900 nine hundred 1,000 one thousand 1,001 one thousand and one 1,300 thirteen hundred;one thousand and three hundred 2,000 two thousand 2,034 two thousand and thirty-four 6,502 six thousand five hundred and two 38,000 thirty-eight thousand 45,672 forty-five thousand six hundred and seventy-two 500,000 five hundred thousand 1,000,000 one million 3,123,400 three million,one hundred and twenty-three thousand and four hundred 8,000,000 eight million 47,000,000 forty-seven million 900,000,000 nine hundred million 1,000,000,000 a milliard,one milliard(美作:a billion,one billion) 1,050,000,000 one billion and fifty million 10,000,000,000 ten billion 200,000,000,000 two hundred billion 1,000,000,000,000 a billion,one billion(美作:a trillion,one trillion) 6,000,000,000,000 six million million。