1. MEASURING MASS UNITS TO MEASURE MASS STANDARD WEIGHTS EQUIVALENT WEIGHTS Topics ADDING WEIGHTS FINDING TOTAL WEIGHT DISTRIBUTION OF WEIGHT

2. MEASURING MASS Mass or Weight is a measure of how heavy something is. Scale can be used to measure mass. Balance Weights

3. UNITS TO MEASURE MASS Mass is measured in kilograms (kg) or grams (g). kilogram is used to measure heavier objects. 85 kilograms 40 kilograms each Gram is used to measure lighter objects. 250 grams 500 grams 150 grams

4. STANDARD WEIGHTS 1 kg 500 g 0r ½ kg 200 g 100 g 50 g

5. EQUIVALENT WEIGHTS + 1 kg= 2 × 500 g 1 kg= 5 × 200 g 1 kg= 10 × 100 g + + +++ +++ + + ++ 1 kg = 1000 g

6. ADDING WEIGHTS + + 800 g Find the total weight + 650 g + ++ + + + 1 kg 750 g + + + 2 kg 250 g

7. FINDING TOTAL WEIGHT If weight of a household soap is 200 g then find the weight of such 4 soaps. = 200 g = ? 800 g Madhu bought 3 packets of sugar form a hypermarket. If the weight of each packet is 750 g then find the total weight of sugar in kg and g. + + = ? 2 kg 250 g Raman bought 2 kg apples, 1 kg 300 g oranges and ½ kg grapes. Find the total weight of fruits bought by Raman in kg and g. 2 kg 1 kg 300 g ½ kg 3 kg 800 g 0

8. Mohit wants to buy 1 kg tea. At a shop, tea packet are available in 200 g each. How many packets should Mohit buy to weight 1 kg. = 200 g 5 packets DISTRIBUTION OF WEIGHT Mrs Gupta bought a packet of chilly power weighting 2 kg. She wants to put chilly powder into jar of capacity 200 g each. How many such jars will she need? 2 kg 200 g 10 Jars