Lesson 5 Introduction to Addition Algorithms
Let’s learn new ways to add.
Warm-up Which One Doesn’t Belong: 247
Which one doesn’t belong?
Activity 1 What is an Algorithm?
Three students found the value of
Tyler’s drawing
Lin’s method
Han’s method
Activity 2 Try an Algorithm
Try using an algorithm to find the value of each sum. Show your thinking. Organize it so it can be followed by others.
Practice Problem
Problem 1
Here are three different ways to find the value of
How are the methods alike? How are they different? Explain your reasoning.