Lesson 18 Paint Splattered Bar Graph
Let’s solve problems involving a bar graph and addition and subtraction.
Warm-up Number Talk: Subtract Within 1,000
Find the value of each expression mentally.
Activity 1 Student Population
Oh no! Paint fell on the poster of the bar graph Clare and Priya created.
Answer the questions that you can with the graph. If a question cannot be answered, explain how you know.
What is the total number of students in grades 3 and 4?
How many more students are in grade 2 than in grade 1?
How many more students are in grade 3 than grade 2?
Write at least 2 mathematical questions that can be answered using the bar graph.
Activity 2 Asked and Answered
For each round:
Trade one question you came up with in the last activity with a partner.
Answer the question. Show or explain your reasoning.
If you have time, trade another question with a different partner.