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PPT: How Heavy? How Light? (Weight) | Mathematics for Class 4: NCERT PDF Download

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 Page 1


MEASURE
 OF
WEIGHT
Page 2


MEASURE
 OF
WEIGHT
Units of Weight
Kilogram is used to
measure heavy weights
such as the weight of a
person, your school
bag, etc.
Gram is used to
measure light weights,
such as the weight of a
feather, a chocolate,
etc.
1 Kg = 1000 gm
Grams (gm) Kilograms (Kg)
Conversion
1 gm =       1      kg
                      1000
Page 3


MEASURE
 OF
WEIGHT
Units of Weight
Kilogram is used to
measure heavy weights
such as the weight of a
person, your school
bag, etc.
Gram is used to
measure light weights,
such as the weight of a
feather, a chocolate,
etc.
1 Kg = 1000 gm
Grams (gm) Kilograms (Kg)
Conversion
1 gm =       1      kg
                      1000
Add 23 kg 521 g, 53 kg 293 g
and 18 kg 509 g.
Addition of Weight
Kg g
5 2 1
2 9 3
5 0 9
2 3
5 3
1  8
3 2 3 9 5
Answer = 19 Kg 323gm
Page 4


MEASURE
 OF
WEIGHT
Units of Weight
Kilogram is used to
measure heavy weights
such as the weight of a
person, your school
bag, etc.
Gram is used to
measure light weights,
such as the weight of a
feather, a chocolate,
etc.
1 Kg = 1000 gm
Grams (gm) Kilograms (Kg)
Conversion
1 gm =       1      kg
                      1000
Add 23 kg 521 g, 53 kg 293 g
and 18 kg 509 g.
Addition of Weight
Kg g
5 2 1
2 9 3
5 0 9
2 3
5 3
1  8
3 2 3 9 5
Answer = 19 Kg 323gm
Subtract 12 kg 845 g from 96
kg 519 g.
Subtraction of
Weight
Kg g
5 1 9
8 4 5
9 6
1  2
6 7 4 8 3
Answer = 83 Kg 674 gm
Page 5


MEASURE
 OF
WEIGHT
Units of Weight
Kilogram is used to
measure heavy weights
such as the weight of a
person, your school
bag, etc.
Gram is used to
measure light weights,
such as the weight of a
feather, a chocolate,
etc.
1 Kg = 1000 gm
Grams (gm) Kilograms (Kg)
Conversion
1 gm =       1      kg
                      1000
Add 23 kg 521 g, 53 kg 293 g
and 18 kg 509 g.
Addition of Weight
Kg g
5 2 1
2 9 3
5 0 9
2 3
5 3
1  8
3 2 3 9 5
Answer = 19 Kg 323gm
Subtract 12 kg 845 g from 96
kg 519 g.
Subtraction of
Weight
Kg g
5 1 9
8 4 5
9 6
1  2
6 7 4 8 3
Answer = 83 Kg 674 gm
COMPARISON
 OF 
WEIGHT
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FAQs on PPT: How Heavy? How Light? (Weight) - Mathematics for Class 4: NCERT

1. How can weight be measured accurately?
Ans. Weight can be accurately measured using a scale or a balance. It is important to ensure that the scale is calibrated and zeroed before taking the measurement.
2. What is the difference between weight and mass?
Ans. Weight is the measurement of the force of gravity acting on an object, while mass is the amount of matter in an object. Weight can vary depending on the gravitational pull, while mass remains constant.
3. How does weight affect an object's motion?
Ans. Weight plays a role in determining an object's acceleration due to gravity. Heavier objects will experience a stronger gravitational force and therefore accelerate faster than lighter objects.
4. Can weight be converted to mass?
Ans. Weight is a measure of force, while mass is a measure of the amount of matter in an object. Weight can be converted to mass using the formula W = mg, where W is weight, m is mass, and g is the acceleration due to gravity.
5. How does weight affect an object's buoyancy in water?
Ans. The weight of an object affects its buoyancy in water. Objects that are less dense than water will float, while objects that are more dense will sink. The weight of an object determines how deeply it will sink or float in water.
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