
Ratio
Presentation
•
Mathematics
•
5th Grade
•
Practice Problem
•
Medium
Mr. K
Used 294+ times
FREE Resource
6 Slides • 7 Questions
1
Ratio
Class Discussion
2
Learning Objectives:
Students will be able to construct the ratio based on the data then convert it to the simplest form.
Students will be able to construct the “Part-to-Part” and “Part-to-Whole” ratios from the data given.
3
Open Ended
Tell me what you know about ratio.
4
Multiple Choice
Ratios can be shown in different ways, except:
Use the “:” to separate the values
Write it like a fraction
Use the “;” to separate the values
Use the word “to”
5
Rules for comparing quantities:
The units of measurement must be the same.
The answer does not state the units of measurement.
The ratio does not give the actual numbers.
The ratio must always be written in its simplest form.
6
Open Ended
Look at the following ratio:
5 kg : 10 g
What's wrong with the ratio above?
7
Equivalent ratio
The trick with ratios is to always multiply or divide the numbers by the same value.
8
Multiple Select
Which are the equivalent ratios of 4 : 6?
1 : 3
2 : 3
8 : 12
18 : 12
20 : 30
9
Multiple Choice
Read the following description about "Make Some Chocolate Crispies".
To make these chocolate crispies I used:
- 20 grams of chocolate
- 15 grams of cornflakes
Calculate the ratio of chocolate to cornflakes.
15 : 20
3 : 4
4 : 3
20 : 15
10
Multiple Choice
Read the following description about "Make Some Chocolate Crispies".
To make these chocolate crispies I used:
- 20 grams of chocolate
- 15 grams of cornflakes
Work out the amount of ingredients to make 21 cakes.
21 grams of chocolate
21 grams of cornflakes
420 grams of chocolate
315 grams of cornflakes
4 grams of chocolate
3 grams of cornflakes
11
Part-to-Part and Part-to-Whole Ratios
A ratio compare one part to another part.
A ratio can also show a part compared to the whole lot.
12
Multiple Choice
Look at the picture. What is the ratio of strawberries to total fruit?
4 : 3
3 : 4
7 : 4
4 : 7
13
Post-class activity
Please join the live battle session to review our knowledge about ratio.
Ratio
Class Discussion
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