Monthly Archives: December 2006

Pre-Algebra: Chapter 6-5 Multiplying and Dividing Decimals To multiply with decimals, just multiply the numbers and arrive at your final answer. Count, from the right, the number of places to the decimals in the 2 numbers that you are multiplying. … Continue reading →

Pre-Algebra: Chapter 6-4 Dividing Fractions The multiplicative inverse of a fraction (even a whole number like 4 or 4/1) is just the flipping over of the fraction. The multiplicative inverse or reciprocal * the original fraction has a product of … Continue reading →

Pre-Algebra: Chapter 6-3 Multiplying Fractions To multiply fractions, keep it simple! Multiply the numerators and then the denominators. Don’t forget to reduce! You can cross cancel (or cross divide) to simplify the answer as well. Example: x = (5/12) * … Continue reading →

Pre-Algebra: Chapter 6-2 Estimating Products and Quotients As we did in class today, when we are dealing with fractions, it is easier to estimate, for example, 3 & 4/7 (3 and 4/7) if you think of whole numbers above the … Continue reading →