This document provides a lesson on multiplying fractions and decimals. It includes:
- An exploratory challenge for students to calculate products of decimals and prove the correct placement of the decimal point.
- Examples of multiplying decimals, with the rule that the number of decimal places in the product equals the sum of decimal places in the factors.
- Additional word problems applying decimal multiplication, with worked out solutions.
- A closing discussion of using factor information to determine the maximum place value and number of decimal digits in a product.