Posted by Chris on Thursday, October 11, 2007 at 1:25pm.
One number is 6 times another. The greater number is 1680. What is the lesser number?

Math  Ms. Sue, Thursday, October 11, 2007 at 1:42pm
Since division is the inverse of multiplication, you need to divide 1680 by 6 to find the lesser number.
We'll be glad to check your answer. 
Math  Chris, Thursday, October 11, 2007 at 2:19pm
so its
6n < 1680
÷6 ÷6
n < 280 
Math  Ms. Sue, Thursday, October 11, 2007 at 2:22pm
Yes. The lesser number is 280.