Prealgebra Textbook

- Section 1: Introduction to Decimals
- Section 1: Exercises
- Section 2: Adding and Subtracting Decimals
- Section 2: Exercises
- Section 3: Multiplying Decimals
- In section 5.3 Multiplying decimals, problem numbers 93-96 give you the diameter and ask you to compute area, but we haven't learned to divide fractions yet. I think a quick fix would be just to change the word diameter to radius. (Amber Buntin, 7/18/2012)
- Section 3: Exercises
- Section 4: Dividing Decimals
- Section 4: Exercises
5.5 Fractions and Decimals When converting a fraction to a decimal, only one of two things can happen. Either the process will terminate or the decimal representation will begin to repeat a pattern of digits. In each case, the procedure for changing a fraction to a decimal is the same.

Can this be changed to ...

5.5 Fractions and Decimals When converting a fraction to a decimal, one of three things will happen: The process can terminate, or the decimal representation will begin to repeat a pattern of digits, or the decimal will be rounded (and then written as an approximation). In each case, the basic procedure for changing a fraction to a decimal is the same.

(For example, 3/23 is approximately 0.130434782608696 and although it will be a repeating decimal, we have not yet gotten to a point at which we can see any pattern, so in almost every case, a person would stop at some point and give a rounded approximation.) Some texts call for fractions to be converted to decimals with directions that specify to round to the nearest thousandth, for example. (Tami Matsumoto, 7/18/2012)

- Section 5: Fractions and Decimals<
- Page 403, midpage, 1/12=0.833333... should be changed to 1/12=0.0833333... (Christian Seberino, 3/15/2013).

- Section 5: Exercises
- Section 6: Equations with Decimals
- Section 6: Exercises
- Section 7: Introduction to Square Roots
- Section 7: Exercises
- Section 8: The Pythagorean Theorem
- Section 8: Exercises

This site created and maintained by the College of the Redwoods, Department of Mathematics