Lesson Plan: Multiplying Decimals: Placing the Decimal Point
This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to use number sense, estimation, and other strategies to place the decimal point when multiplying decimals.
Objectives
Students will be able to
- apply knowledge of multiplying integers to multiplying decimals,
- use compensation to solve decimal multiplications,
- apply number sense to correctly place the decimal point in a decimal multiplication,
- estimate the product of two decimals and use this to correctly place the decimal point in a calculation.
Prerequisites
Students should already be familiar with
- multiplying by 10 and 100 by moving digits to the left,
- dividing by 10 and 100 by moving digits to the right,
- reading and writing decimals with up to two decimal places,
- using compensation in a calculation (making an adjustment to a calculation to make the numbers easier and then compensating for this by adjusting the answer at the end).
Exclusions
Students will not cover
- multiplying decimals with more than two decimal places.
