Rates, Ratios, and Unit Rates

Rates, Ratios, and Unit Rates

Assessment

Interactive Video

Mathematics

6th - 7th Grade

Hard

Created by

Thomas White

FREE Resource

This video tutorial explains how to solve rate and ratio problems using two methods: scale factor and unit rate. It covers the concept of equivalent ratios and demonstrates how to apply these methods to real-world problems, such as determining the number of pizzas needed for a group or the cost of DVDs. The video also highlights the importance of finding a unit rate when direct scaling is not feasible.

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9 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary use of rates and ratios in problem-solving?

To create complex mathematical models

To solve prediction and comparison problems

To measure physical quantities

To calculate probabilities

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a scale factor in the context of rate and ratio tables?

A number used to find the average

A number used to subtract values

A number used to multiply or divide values to create equivalent ratios

A number used to add values

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the pizza example, what is the scale factor used to find the number of pizzas needed for 27 guests?

5

4

3

2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many DVDs can be bought for $80 if 5 DVDs cost $40?

10

15

20

5

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many cups of pecans are needed to serve 8 people if 6 cups serve 24 people?

4

2

3

1

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a unit rate?

The rate for multiple items

The rate for a dozen items

The rate for one item

The rate for two items

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If 5 CDs cost $50, what is the cost of one CD?

$5

$10

$20

$15

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How far can an ostrich run in 17 minutes if it runs 70 miles in 35 minutes?

51 miles

68 miles

34 miles

17 miles

9.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the two methods discussed for solving rate and ratio tables?

Addition and subtraction

Multiplication and division

Scale factors and unit rates

Graphs and charts