PART PART
Definition Of Part-Part
Part-Part is a ratio that represents the relationship of one part of a whole to another part of the same whole.
More About Part-Part
It helps in making proportional judgments.
In Part-Part the degree of numerator is less than the degree of the denominator.
Examples of Part-Part
Suppose there are 10 marbles in a bag, out of which 3 are green in color and the remaining 7 are red in color. Then the part-part ratio of the green marbles to the red marbles is given as 
.
Video Examples: Singapore Math Basic Part/Whole Model Lesson
Solved Example on Part-Part
Ques: In a group of 40 people, 25 people attended a meeting and the remaining abstained from the meeting. Find the part-part ratio of the people who attended the meeting to those who abstained from it.
Choices:
A. 
B. 
C. 
D. none of the above
Correct Answer: A
Solution:
Step 1: Part-Part is a ratio that represents relation of one part of the whole to another part of the same whole.
Step 2: Given that the 25 out of 40 people attended the meeting and the remaining 15 abstained from the meeting.
Step 3: Then the part-part ratio of people who attended the meeting to those who abstained from the meeting is .
Quick Summary
- Part-Part ratios help in making proportional judgments.
- It compares one part of a whole to another part of the same whole.
- The numerator's degree is often less than the denominator's.
🍎 Teacher Insights
Use visual aids like colored blocks or marbles to illustrate part-part relationships. Emphasize the importance of identifying the 'whole' before determining the parts.🎓 Prerequisites
- Understanding of fractions
- Basic arithmetic operations
Check Your Knowledge
Q1: In a class of 30 students, 12 are boys and 18 are girls. What is the part-part ratio of boys to girls?
Q2: A basket contains 5 apples and 8 oranges. What is the part-part ratio of apples to oranges?
Frequently Asked Questions
Q: What is the difference between part-part and part-whole ratio?
A: Part-part compares two parts of the same whole, while part-whole compares one part to the entire whole.
Q: How to simplify a part-part ratio?
A: Divide both parts of the ratio by their greatest common factor.