Distinguishing Multiplicative and Additive Comparisons

The video tutorial focuses on solving word problems by distinguishing between additive and multiplicative comparisons using bar models. It explains key terms that indicate which mathematical operation to use and provides examples of both types of problems. The tutorial also covers a complex problem that involves both addition and multiplication, demonstrating how to solve it step-by-step. The video concludes with tips on using bar models effectively for comparison word problems.

What key terms indicate an additive comparison in a word problem?

• Twice as many

• Equal groups of

• More or more than

• Times as many

In the problem where Maria brought 8 cupcakes and Jeremy brought 12 more, how many cupcakes did Jeremy bring?

• 20

• 24

• 8

• 12

What operation is indicated by the phrase 'times as many'?

• Division

• Subtraction

• Addition

• Multiplication

If Mike brings in four times as many cupcakes as Maria, who brought 8, how many cupcakes does Mike bring?

• 16

• 40

• 24

• 32

In the complex problem, how many balloons did Becky bring?

• 6

• 3

• 27

• 9

Jessica brought three more balloons than Becky. If Becky brought 6 balloons, how many did Jessica bring?

• 6

• 8

• 12

• 9

Earl brought three times as many balloons as Jessica. If Jessica brought 9 balloons, how many did Earl bring?

• 27

• 18

• 30

• 21

What is the total number of balloons brought by Becky, Jessica, and Earl?

• 45

• 42

• 50

• 48

What should you use to represent and solve comparison word problems?

• Scatter plots

• Line graphs

• Bar models

• Pie charts

What is a key strategy for solving multi-step comparison word problems?

• Ignoring the keywords

• Using multiple bar models

• Guessing the answer

• Using a calculator