Hi DeHe,

Sorry for the long response time. I haven't used Murderous Math, so it's hard to say.

The BA 3C book (3rd out of 4 books intended for 3rd graders) starts with basic pre-algebra (What's a variable? Write equations from word sentences. Move numbers across the = sign.). Then it does long division. Some of the problems the typical ones you'd find in a fourth-grade textbook. Others are definitely NOT. Examples:

  • When 234 little monsters are divided equally into 9 classrooms, how many little monsters are in each classroom?
  • When 41 is divided by 7, the quotient is a with remainder b. What number can be divided by 9 to get quotient b with remainder a?

The 3B book has multiplication, perfect squares, he distributive property and pages and pages of easy-to-difficult problems using all of them.

3D will be released in January and will have fractions, area, and estimation.

The books seem to have two goals: the first is to teach the basics of various operations and ideas in early mathematics. The second is to teach very young students to start thinking in the language of mathematics. Does Murderous Maths do this?