With so many people having a smartphone in their pocket -- a calculator that can help determine discounts in stores, calculate a tip percentage in restaurants, or balance a checkbook in a snap -- is it really useful to be able to do fast math in your head? Many still say yes. You may not always have a calculator handy, or you may have your hands full or no cell service. Before you wonder just how useful that high school algebra class was, see if you know these best math tricks.
Instead of worrying about how much to tip at a restaurant, or the dollar amount of your favorite clearance sale, use this fast trick to determine percentages. First, multiply the first number by the second number. For example, 30 percent of 50 is 30 x 50. Keep in mind that percentages are a fraction of 100, so you'll move the decimal places two points to the right. So, for 30 percent of 50, you multiply 30 x 50, which is 1500. Move your decimal point two places to the right, and you'll see that 30 percent of 50 is 15.
This site offers information designed for educational purposes only. The information on this Website is not intended to be comprehensive, nor does it constitute advice or our recommendation in any way. We attempt to ensure that the content is current and accurate but we do not guarantee its currency and accuracy. You should carry out your own research and/or seek your own advice before acting or relying on any of the information on this Website.