I am new to this type of math. I need help............. Can any one point to me to a good web site where I can learn about rounding and stuff. Here is another one I am struggling with. I looked in the internet could not find one that really explains it well How to estimated 3.9 * 7.4 using front end rounding? How to estimated 33.294/6.2, again using front end rounding? Arrange in assending order the following: 0.321,0.302,8/25 This one look straight forward as 8/25 = 0.32 --> 0.302, 8/25, 0.321 But if I am mindful about sig figures 8/25 = 0.3 and my assending order becomes, 8/25,0.302, 0.321. Any help or hint is much appreciated. Thanks, gamma.