Then you may see that the 40 thousand in numbers takes more space but if we write that down in scientific notation then it will look like this : 4 × 104 How many zeros does 40 thousand have? When we count zeros in 40 thousand above, we see that there are 4 zeros. If you want to write 40 thousand in words, then it will be written as ` forty ... The number 40000 in words is " Forty thousand ". It may signify a significant number of people, a considerable sum of money, or the... How do you spell the number 40 ? This is some confusion about whether its forty or fourty , thanks in part to history, but in this article we clear up the confusion and explain without doubt how to spell the number 40 . Fourty or forty thousand - 59135742Answer: Step-by-step explanation: 40000 in words is Forty Thousand . The number name of 40000 can be written using the ones, tens, hundreds, thousands place of a number.