How to figure out a tip, save time doing math in your head, and decide whether or not to buy a lottery ticket
Math is a useful tool for understanding the world, and there are many ways to make certain tasks easier. Here are eight tips for quickly figuring out a tip, saving time doing math in your head, and deciding whether or not to buy a lottery ticket. Visit Business Insider's homepage for more stories. The worst part of going out to dinner with a group of friends is figuring out who owes what at the end of the night.
Math is a useful tool for understanding the world, and there are many ways to make certain tasks easier. Here are eight tips for quickly figuring out a tip, saving time doing math in your head, and deciding whether or not to buy a lottery ticket. Visit Business Insider's homepage for more stories. The worst part of going out to dinner with a group of friends is figuring out who owes what at the end of the night.
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