Lesson Plan
Subtracting Decimals: Presidential Problems at the Pizza Place
Students will practice subtracting decimal numbers by calculating the total of prominent political figures’ meals at a pizzeria. Then, students can create and solve their own word problems using the menu on the activity.
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Learning Objectives
Students will calculate differences using decimal numbers to the tenths and hundredths.
Introduction
(10 minutes)- Ask students how they know if a number is more than or less than one. The purpose is to get them thinking about partial numbers and how we write them. They may provide answers that suggest fractions or decimals.
- Now ask students how they know if a decimal number is less than one.
- Write the number 14.36 (or something similar) on the board. Ask students which part of that number is less than one.
- Emphasize that the decimal is a very important marker that is boundary between whole numbers and numbers less than one whole.
- Inform students that they will be reviewing how to add and subtract decimals to the hundredths by calculating the meal totals of some famous politicians.