Exploring Missing Values in Ratio Tables

This video tutorial on ratio tables covers how to find missing values using equivalent ratios. It begins with an introduction to the topic and outlines the learning goals. The video reviews the concept of equivalent ratios, providing examples to illustrate how they are calculated. It then explains how to use ratio tables and demonstrates the process of filling in missing values with step-by-step examples. The tutorial concludes with practice exercises and acknowledgments.

What do you need to find missing values in a ratio table?

• Guessing

• Addition skills

• Subtraction skills

• Equivalent ratios

How can you create equivalent ratios?

• Adding the same number

• Random guessing

• Subtracting the same number

• Multiplying or dividing by the same number

If you have a ratio of 4 hamburgers to 2 hot dogs, how many hot dogs will you have for 8 hamburgers?

• 2 hot dogs

• 8 hot dogs

• 4 hot dogs

• 6 hot dogs

What is the first step in filling missing values in a ratio table?

• Guess the missing values

• Divide the smallest number

• Multiply the largest number

• Identify and circle the complete ratio

What operation do you perform to both sides of a ratio to keep it equivalent when the quantity increases?

• Subtraction

• Multiplication

• Addition

• Division

If the ratio of boys to girls is 6 to 10, what is the ratio if the number of boys is halved?

• 12 to 20

• 6 to 5

• 3 to 10

• 3 to 5

In a ratio table comparing cars to trucks, if 6 cars correspond to 5 trucks, how many trucks correspond to 18 cars?

• 30 trucks

• 5 trucks

• 10 trucks

• 15 trucks

When comparing trumpets to tubas, if dividing the number of trumpets by 3 gives 7, what operation is performed on the tubas?

• Addition of 3

• Division by 3

• Multiplication by 3

• Subtraction of 3

What should you do after completing the last table in your notes?

• Guess the missing parts

• Erase everything

• Check your answers

• Start over

Who provided the fonts and clip arts used in the video?

• All of the above

• Amy Grosbeck and Amanda Newsom

• Bricks and Border

• Pickle Garden Designs