How many ten thousands make a hundred million?

Answer 1

This question is most simply answered by using exponent notation. 10 000 = 10**(4). 100 000 000 = 10**(8)[where ** is taken to mean 'to the power of.]

From this we may simply subtract the smaller from the larger exponent. (8) - (4) = 4, therefore there are 10**(4) ten thousands to make one hundred million.