Ways to write 40

Words	forty
Title Case	Forty
On a check	forty and 00/100
Currency	forty dollars

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Nearby numbers

Number	In words
21	twenty-one
25	twenty-five
30	thirty
35	thirty-five
40	forty
45	forty-five
50	fifty
60	sixty
70	seventy

Related

All numbers in words · Roman numerals · Percentage answers