Lesson 4 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
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.
Here are three different ways to find the value of
How are the methods alike? How are they different? Explain your reasoning.