What is 65 Times Ten Million?
Date: 29 Mar 1995 14:40:58 -0500 From: Susan Fisher Subject: Question about times one million Dear Dr. Math, What is 65 times ten million? Also, we've had pluses, multiples and times. Is there going to be any new things after that? Thanks for trying even if you don't get that one. Eli Golden 2nd Grade Hadley School Swampscott, Mass. email: email@example.com
Date: 29 Mar 1995 18:21:50 -0500 From: Dr. Ken Subject: Re: Question about times one million Hello there! About your first question: multiplying by ten million isn't as hard as you might think. First notice that ten million is 10,000,000. When you multiply by a number like 10 or 1,000 or something like that, you just take all the zeroes from one number and stick them on the other one. For instance, 6 x 10 = 60, 57 x 100 = 5700, and 65 x 10,000,000 = 650,000,000. So that's the answer. About your second question: Oh yes, there will soon be something new. I hope I'm not spoiling the surprise. You know how addition and subtraction are opposites? By that I mean if 3 + 5 = 8, then 8 - 5 = 3, and things like that. Well, there's going to be a new operation that you'll learn that's the opposite of multiplication. It's called "division." The good part is, if you know how to multiply, you'll learn how to divide really fast: for instance, since 4 x 5 = 20, 20 divided by 4 is 5. Does that make sense? It'll get a whole lot easier when you do it more. Thanks for the question! -Ken "Dr." Math
Search the Dr. Math Library:
Ask Dr. MathTM
© 1994-2015 The Math Forum