## Archive for October 2, 2020

### One-Hundred Problems Involving the Number 100

Although the following joke appears in **Math Jokes 4 Mathy Folks** —

Why was the math book sad?

Because it had so many problems.

— I’ve often contended that it isn’t true. Math books aren’t sad because they have too many *problems*. They’re sad because they have too many *exercises*.

But my forthcoming book isn’t the least bit melancholy, because it contains a multitude of honest-to-goodness, classroom-tested, student-approved, 100% legit math problems — a century of them, in fact, as implied by the title.

**Disclaimer:** The title is a lie. The book actually contains 101 problems. I was so excited, I just couldn’t stop myself when I got to 100. But don’t you worry; there’s no charge for that extra 1%.

As a sample, here are four problems from the book. To experience a fifth problem, register for an **NCTM Author Panel Talk** on Wednesday, October 7, 7:00 p.m. ET, when Marian Small, Roger Day, and I will be discussing rich tasks and sharing samples from each of our new books. The webinar will be moderated by NCTM Board Member Beth Kobett. Hope to see you there!