Class 5 Exam  >  Class 5 Notes  >  Mathematics for Class 5: NCERT  >  Important Questions: Parts and Wholes

Class 5 Maths Chapter 4 Important Question Answers - Chapter 4- Parts and whole

Q1: Multiply the following.
15 × 2/5
Ans: 15 × 2/5
Can be written as
= 3 × 2
= 6


Q2: Find: 
2/5 of 15
Ans: 2/5 × 15
= 6


Q3: Find:
1/3 of 12
Ans:
1/3 × 12
= 4


Q4: 7/50 of a kilogram = ? grams
Ans: 1kg = 1000gms
7/50 × 1000 = 140 gms


Q5: Saroj plants 6 mango trees in row in her garden. The distance between two adjacent mango trees is 5/4 m. Find the distance between the first and the last mango tree.
Ans:
∴ Distance between first & last = 5 × 5/4 = 25/4 m.
Class 5 Maths Chapter 4 Important Question Answers - Chapter 4- Parts and whole


Q6: Rani says that the shaded portion in the given figure represents 1/4. Do you agree with her? Give the reason to support your answer?
Class 5 Maths Chapter 4 Important Question Answers - Chapter 4- Parts and whole
Ans: 
From the symmetry of the figure we can say that the shaded part represents 1/4 the portion of circle.


Q7: Find 3/10 of a kilogram.
Ans: 
1 kg = 1000 gms
3/10 × 1000 = 300 gms


Q8: Ramesh had 20 pencils, Sheelu had 50 pencils and Jamaal had 80 pencils. After 4 months. Ramesh used up 10 pencils, Sheelu used up 25 pencils and Jamaal used up 40 pencils. What fraction did each use up? Check if each has used up an equal fraction of her/his pencils?
Ans: Ramesh = 20 pencils
Sheelu = 50 pencils
Jamaal = 80 pencils
After 4 months
Ramesh = 10 pencils used
Sheelu = 25 pencils used
Jamaal = 40 pencils used
Fraction of pencils used = Class 5 Maths Chapter 4 Important Question Answers - Chapter 4- Parts and whole
Ramesh = 10/20 = 1/2
Sheelu = 25/50 = 1/2
Jamaal = 40/80 = 1/2
Hence equal fraction of pencils all used.


Q9: 3/8 of 64 equals:
Ans: 3/8 of 64 = 3/8 × 64 = 3 × 8 = 24
Hence, the correct answer is 24.


Q10: Multiply and write the answer into lowest term 15 × 12/20
Ans: = 15 × 12/20
= 15 × 3/5
= 3 × 3
= 9

The document Class 5 Maths Chapter 4 Important Question Answers - Chapter 4- Parts and whole is a part of the Class 5 Course Mathematics for Class 5: NCERT.
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FAQs on Class 5 Maths Chapter 4 Important Question Answers - Chapter 4- Parts and whole

1. What is the concept of "parts and whole" in Class 5?
Ans. The concept of "parts and whole" in Class 5 refers to understanding the relationship between the different parts of an object or a group and the whole object or group itself. It involves recognizing how the parts contribute to the functioning or structure of the whole.
2. How can the concept of "parts and whole" be applied in real-life scenarios?
Ans. The concept of "parts and whole" can be applied in real-life scenarios in various ways. For example, it can help in understanding the components of a machine and how they work together to perform a specific task. It can also be useful in analyzing the different organs of the human body and their functions.
3. What are some examples of "parts and whole" in everyday life that can be taught in Class 5?
Ans. Some examples of "parts and whole" in everyday life that can be taught in Class 5 include understanding how a seed, soil, water, and sunlight are necessary components for a plant to grow. Similarly, learning about the different parts of a computer, such as the monitor, keyboard, and CPU, and how they function together can also be taught.
4. How can the concept of "parts and whole" be beneficial for problem-solving skills?
Ans. The concept of "parts and whole" can be beneficial for problem-solving skills as it helps in breaking down complex problems into simpler parts, allowing for a better understanding of the problem as a whole. By analyzing the individual parts and their relationships, students can identify the root cause of the problem and develop effective solutions.
5. What teaching strategies can be used to effectively teach the concept of "parts and whole" in Class 5?
Ans. To effectively teach the concept of "parts and whole" in Class 5, teachers can use various strategies such as hands-on activities where students can physically manipulate objects and observe their parts. They can also use visual aids like diagrams, charts, and models to illustrate the relationship between the parts and the whole. Additionally, engaging students in group discussions and encouraging them to ask questions can further enhance their understanding of the concept.
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