Lesson: Comparative Bar Models: Numbers up to 100 Math in Focus • Singapore Math • Grade 2 • Volume A • Common Core • Go Math! • Grade 2 • Common Core

Mathematics

In this lesson, we will learn how to solve one-step additive comparison problems with numbers up to 100 by drawing a comparative bar model.

Sample Question Videos

Q1:

Chloe scored 41 points in a sports competition. Madison scored 28 points more than Chloe.

We want to find out how many points Madison scored. We can use a part-part-whole diagram to model this problem.

Is Madison’s score the whole or the other part?

How many points did Madison score?

Q2:

Isabella scored 72 points in a sports competition. William scored 19 fewer points than Isabella.

We want to find out how many points William scored. We can use a part-part-whole diagram to model this problem.

Is William’s score the whole or the unknown part?

How many points did William score?

Q3:

Select the word problem that can be solved using this part-part-whole diagram.

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