Ever need to find the GCF of two numbers? Here’s a trick for finding the GCF of any two numbers — very quickly. This is an original trick, so I doubt you’ll find it anywhere else online. But most important, it’s easy to use, and it works no matter how large the numbers might be. Also nice … learning this […]
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Here’s the problem — Al’s Discount Clothing store is trying to entice customers with a special “20-40” Percent Sale. Here’s how it works. For all sale items, the Al’s first takes off 20%. Then the store takes an additional 40% off the sale price. Questions: a) How much is the discount, under […]
Well, my obsession this summer turns out to be knives. But don’t get any wrong ideas. When I say knives, I mean knives for whittling and wood carving. That’s the true obsession. But knives themselves are a pretty close second. I am a guy after all. In getting obsessed with knives, it’s impossible not to […]
Questions make math come alive. See an example that bursts open any sterotype that math is dull. See how math can be like a religious experience.