Python 1 Module 4 Lesson 5 Banner

Overview

The student will consider the following...

In this lesson, students learn about the intricacies of floating point numbers. When using comparison operators with floating point numbers in Python, we will sometimes see strange behavior because of bizarre rounding methods. When using a comparison operator with floating point numbers, you should use round(x) to avoid strange rounding behavior. The version, round(x, n), will round the float x to n decimal places. The version, round(x), will round the float x to 0 decimal places.

Objectives

The student will be able to...

Use floating point numbers
Round values in their programs
- Using the round function
- Using the int cast to round to the nearest whole number (NOT IN CODEHS)

Key Terms

The student should know the following vocabulary...

round( ) function syntax
- round(x)
- round(x, n)
- round(x, 0)
float( ) function syntax
int casting to round

Activities

The student will perform the following activities...

Review the Module 2 Lesson 4 CodeHS (4.4) Exercises
Complete the Module 2 Lesson 5 Warmup
Complete the Code HS Unit 4 Lesson 5 (4.5) Floating Point Numbers and Rounding
Complete the Module 2 Lesson 5 Quiz