Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. Your computer’s built-in calculator app is acting like an old ...

Add Yahoo as a preferred source to see more of our stories on Google. In theory, tipping should be simple. If you receive excellent service, it's easy to reach into your wallet and offer a tip. But in ...

Do you remember back in high school when your geometry teacher stated that you would one day need to know how to calculate the area of a space? Well, that day has come, and it’s likely that you’ve ...

With everyone carrying less cash and increasingly depending on credit cards and digital wallets, demand is growing for tech-savvy tools to make tipping easier. With a few quick swipes on a smartphone, ...

CNBC Select has selected the best free budgeting tools for beginners, investors, small business owners and more. (See our ...