Class 4 Exam > Class 4 Notes > Mathematics for Class 4: NCERT > Worksheet Solutions: How Heavy How Light - 2
Worksheet Solutions: How Heavy How Light - 2 | Mathematics for Class 4: NCERT PDF Download
Q1: Choose the correct answer from the options given below.
(i) Which pan of the balance will go down?
(a) 35g, 40g
(b) 25g, 40g
(c) 15g, 40g
Ans: (a)
(ii) 1 kg = ______ g
(a) 10
(b) 100
(c) 1000
Ans: (c)
(iii) Which of the following is equal to 1 kg?
(a) 700g + 245g + 55g
(b) 560g + 125g + 150g
(c) 650g + 150g + 150g
Ans: (a)
(iv) Your weight is 650g and I am only 145g. How much do we weigh together?
(a) 785g
(b) 795g
(c) 805g
Ans: (b)
(v) Which has more height?
(a) Elephant
(b) Table
(c) Book
Ans: (a)
Q2: Fill in the blanks.
(i) ½ kg =______ g
(ii) 3 kg = ______ g
(iii) ¼ kg = ______ g
(iv) 5.5 kg = ______ g
(v) 1 ½ kg = ______ g
Ans:
(i) 500g
(ii) 3000g
(iii) 250g
(iv) 5500g
(v) 1500g
Q3: Answer the following Questions.
(i) Add 9 kg 750g and 1 kg 250 g
Ans: 9 kg 750g + 1 kg 250g
= (9 + 1) kg + (750 + 250)g
= 10kg 1000g
= 11kg
(ii) A shopkeeper has 150 kg of rice. He sold 123 kg 750g. How much rice is left with him?
Ans:
Quantity of rice a shopkeeper had = 150g
Quantity of rice which he sold = 123kg 750g
Quantity of rice left with him = 150kg – 123kg 750g = 26 kg 250g
(iii) What should be added to 250 g to make it 2 kg?
Ans:
We know that 2kg = 2000g
We need to add 1750g to 250g to make it 2 kg.
(iv) One kilogram oranges cost 85 rupees. How many kilograms can we buy for 200 rupees? How much rupees he will get back?
Ans:
Cost of 1 kg oranges = 85 rupees
Cost of 2 kg oranges = 85 x 2 = 170 rupees
So 2 kg oranges can purchase for 170 rupees and 30 rupees he will get back.
(v) If 1 kg apples cost is 120 rupees, find the cost of2 ½ kg apples?
Ans:
Cost of 1 kg apples = 120 rupees
Cost of 2 kg apples = 120 x 2 = 240 rupees
Cost of ½ kg apples = 60 rupees
Total cost of 2 ½ kg apples = 240 + 60 = 300 rupees.
The document Worksheet Solutions: How Heavy How Light - 2 | Mathematics for Class 4: NCERT is a part of the Class 4 Course Mathematics for Class 4: NCERT.
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FAQs on Worksheet Solutions: How Heavy How Light - 2 - Mathematics for Class 4: NCERT
| 1. What is the concept of weight in physics? |  |
Ans. Weight in physics is the force exerted by an object due to gravity. It is the measure of the gravitational force acting on an object and is usually measured in units such as pounds or kilograms.
| 2. How is weight different from mass? | |
Ans. Weight and mass are often used interchangeably in everyday language, but in physics, they have different meanings. Mass refers to the amount of matter present in an object, while weight is the force exerted by gravity on that object. Mass is a scalar quantity, whereas weight is a vector quantity.
| 3. How can the weight of an object vary on different planets? | |
Ans. The weight of an object can vary on different planets due to variations in the gravitational pull of those planets. The weight of an object is directly proportional to the gravitational acceleration acting on it. Therefore, on a planet with higher gravitational acceleration, the object would weigh more, and on a planet with lower gravitational acceleration, the object would weigh less.
| 4. Can the weight of an object change without changing its mass? | |
Ans. No, the weight of an object cannot change without changing its mass. Weight is directly proportional to mass, so any change in weight would require a corresponding change in mass. However, the apparent weight of an object can change due to factors such as buoyancy or the presence of other forces.
| 5. How is weight measured? | |
Ans. Weight is typically measured using a scale or a balance. A scale measures the force exerted by an object due to gravity, which is directly proportional to its weight. The scale reading gives an indication of the object's weight in the unit of measurement chosen, such as pounds or kilograms.
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