. Find the sum of 15 kg 390 g , 7 kg and 23 kg 8 g.2. Subtract: 39 L 590 mL from 89 L 5 mL.3. Arrange in ascending order :18 kg 760 g ; 38000 g ; 19600 g ; 27 kg 54 g4. Find the difference of 34 kg 9 g and 12 kg 27 g.5. Convert :a) 56 kg 9 g into gb) 48321 mL into L and mL6. A child’s school bag weighs 5 kg 750 g containing books, notebooks and tiffin box. If theweight of the books is 3 kg 155 g and that of notebooks is 2 kg 125 g, then finda) the total weight of the books and notebooks.b) the weight of tiffin box.7. Madhu bought 28 L 822 mL of oil from the market. She used 12 L 45 mL for cooking and5 L 389 mL for making pickles. Finda) the total quantity of oil used for cooking and making pickles.b) how much oil is left with her now?

To find the sum of 15 kg 390 g , 7 kg and 23 kg 8 g, first convert everything to the same unit. 1 kg = 1000 g, so: 15 kg 390 g = 15390 g 7 kg = 7000 g 23 kg 8 g = 23008 g Add these together to get: 15390 g + 7000 g + 23008 g = 45398 g. Convert back to kg and g: 45 kg 398 g.

To subtract 39 L 590 mL from 89 L 5 mL, convert everything to the same unit. 1 L = 1000 mL, so: 39 L 590 mL = 39590 mL 89 L 5 mL = 89005 mL Subtract these to get: 89005 mL - 39590 mL = 49415 mL. Convert back to L and mL: 49 L 415 mL.

To arrange in ascending order: 18 kg 760 g ; 38000 g ; 19600 g ; 27 kg 54 g, convert everything to g: 18 kg 760 g = 18760 g 27 kg 54 g = 27054 g So the ascending order is: 19600 g, 18760 g, 38000 g, 27054 g.

To find the difference of 34 kg 9 g and 12 kg 27 g, convert everything to g: 34 kg 9 g = 34009 g 12 kg 27 g = 12027 g Subtract these to get: 34009 g - 12027 g = 21982 g. Convert back to kg and g: 21 kg 982 g.

Convert: a) 56 kg 9 g into g: 56 kg = 56000 g, so 56000 g + 9 g = 56009 g. b) 48321 mL into L and mL: 1 L = 1000 mL, so 48321 mL = 48 L 321 mL.

If the weight of the books is 3 kg 155 g and that of notebooks is 2 kg 125 g, then: a) the total weight of the books and notebooks is 3 kg 155 g + 2 kg 125 g = 5 kg 280 g. b) the weight of the tiffin box is the total weight of the bag minus the weight of the books and notebooks: 5 kg 750 g - 5 kg 280 g = 470 g.

If Madhu used 12 L 45 mL for cooking and 5 L 389 mL for making pickles, then: a) the total quantity of oil used for cooking and making pickles is 12 L 45 mL + 5 L 389 mL = 17 L 434 mL. b) the amount of oil left is the total amount of oil minus the amount used: 28 L 822 mL - 17 L 434 mL = 11 L 388 mL.