Page 108 - Demo

108 Arrow-Puffin-2_Semester-2 Maths500 gm 200 gm 50 gm 100 gm1 kg 2 kg 5 kg 10 kgMass is described using a number and a unit. The number tells how many times a unit is repeated. A mass of 15 kg means unit kg is repeated 15 times.Object to be weighed Weights 500 gmMeasuring the mass of an object is known as weighing the object. We use different weighing scales or weighing machines to weigh objects.STANDARD UNIT OF MASSThe standard unit of mass is the gram. The short form of gram is %u2018gm%u2019. 1000 grams put together make a bigger unit called kilogram. In short, we write kilogram as %u2018kg%u2019. 1 kilogram = 1000 gramsWe measure lighter objects in grams (g) like a tennis ball, an apple, an orange, etc. and the heavier objects in kilograms (kg) like a melon, big animals, dog, cow, etc.Some commonly used weights are given below.These are commonly used by shopkeepers to weigh rice and sugar.MEASURING MASSLet's Understand Conceptual UnderstandingLet's Understand Conceptual Understanding