30 is a composite number. 30 = 1 x 30, 2 x 15, 3 x 10, or 5 x 6. Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30. Prime factorization: 30 = 2 x 3 x 5.

When 30 is a clue in the FIND THE FACTORS puzzle, use 3 x 10 or 5 x 6. Only one of those pairs will work for that clue in that particular puzzle.

A bookbinding blog with just the right artistic touch for pi expressed as π, a fraction (2 ways), or a decimal!

Playful Bookbinding and Paper Works

22/7 ? Isn’t 24/7 the ratio that we’re used to seeing around, expressing complete availability? 22/7 is a round, too, though its function is more the *description* of a round…. a round circle. If you’re at all up on your numbers, you’ll recognize that the fraction 22/7 is a good approximation for the ratio between a circle’s circumference and diameter, in other words, pi. If you are already quickly losing interest and are ready to stop reading you’re probably one of the multitudes who have suffered while studying the relationships of quantities (math). Now, why am I talking about pi? I don’t think I’m alone in being a bookbinder who has a comfortable connection with numbers: so much of what I do is about measurements, ratios and counting.

I am taking some time this year to take care of health, family, and explore some ideas that have been nipping at my heels for a very long time, which includes playing around…

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