I gather entropy in the universe is supposed to be increasing. Turns out, around here, not so much.
Many thanks to JohnnyFourAces for pointing out that the randomness quotient of some of the worksheets had decreased in a recent update. For some of the “All Math Facts” worksheets, it went down substantially and centered on the earlier (easier) facts in the series.
Fixes for this have been posted, and additionally I added one and two minute timed worksheets to the Spaceship Math Multiplication Facts section to that include sets without the “times zero” and “times one” facts. Cutting these “gimme problems” really increases the density of more difficult multiplication facts and when your student is ready for these, any Mad Minute or Rocket Math timed test at school will seem much easier.
As the math topics have grown more involved, I try to make sure the answer keys for the worksheets reflect not just the result, but the process used to get there. I think that’s one factor that sets DadsWorksheets.com apart from many other math websites. The fraction worksheets are one example where there is a lot more work invested in getting the answer keys looking good than in creating the problems in the first place.
That’s certainly the case with the new series of Factorization Tree Worksheets I just posted. The worksheets themselves are pretty simple… The problems are just a number! But the answers keys show complete factor trees, plus a two-step conversion to the factorization in exponential form. You can see an example here. This is some really cool stuff, worksheet geek-wise anyway.
But, even more fun is adapting the programming to produce a movie. So, without further adieu, I present DadsWorksheet.com’s premiere video, Prime Factorizations of 2 through 9,999 in all of its YouTube glory. I’m already picking out my attire for Oscar night.
Meanwhile, please check out the new worksheets (and the answer keys!) at the link below…
Prime factorizations are great tools for understanding the relationships between two numbers, both compositionally for multiplication and decompositionally for division. Look for future worksheets based on this same layout that use prime factorizations to find greatest common denominators (GCD) and least common multiples (LCM).