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Exercise 2.3, Think and Do :, , 1. (a) Find the sum of 60498, 31292, and 7132.
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(b) Find | the difference of 10123, and 40268., , , , , , , , , , , , , , , , , , , , Sol., , (ay ©0498 (hy) 70123, +3129 2 ao D268, , , , 2. 27020 bricks are required for, constructing a kitchen and 31275, bricks are required for constructing, a room. How many bricks in total, are required for construction of both ?, , Sol. No. of bricks required for the, construction of a kitchen = 27020, No. of bricks required for the, construction of a room = + 31275, , Total no. of bricks required for the, construction of the both = 58295., , 3. Surjit had % 20000 with him. He, bought clothes costing % 13750., How much amount was left with, him ?, , Sol.Surjit had money with him 4, = % 20000 @, Cost of clothes = — % 13750 a, , Money left with him = % 6250 ., 4. In a library, there are 30155 —, , Punjabi books, 28653 Maths books ~, , and 12376 English books. How |, many books are there in the, library ?, , Sol., , Number of Punjabi books = 30155, Number of Maths books =+ 28653, Number of English books =+ 12376, , Total number of books = _ 71184, , __ 5. The sum of two numbers is 89000If one number is 25450 then find, the other miniber.
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a al. Sum of the two numbers, , , , , One of the two numbers = pas, , The other number = at, , 6. What number must be a, , q 70429 to get 100000 2 :, 2 sol. Given sum = 100000, Given number = — 70429, , Number to be added= 29571, , 7. Find the number which is :, , (a) 7976 more than 36798, , | (6) 12967 less than 30067., 4 Sol. (2) Required number = 36798, ; + 7976, = 44774, (b) Required number = 30067, — 12967, = 17100, , 8. If the price of a computer is, % 15560 and price of a laptop is, 9050 more than price of the, computer then find :, , (a) Price of the laptop, , i (b) Total price of both the items., , | Sol. (a) The price of a computer = = 15560, , | The price of laptop is more by = + = 9050 | |, , The price of a laptop = = 24610, , (b) The price of a computer = % 15560, The price of a laptop = + = 24610, The price of the both = % 40170, , 9. Find the greatest and smallest 5, digit numbers using digits 9, 3, 4,, 0, 7. Also find their difference., , } So, t number of 5-digits, } The greates ae, , , , , , , , , , The smallest number of Saige, ao, , Their difference = 66951
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Ti. Find the sum of greatest 2 digits,, 3 digits and 4 digits numbers., Seek,, The grearest 4-digit number = 9999, The greatest 3-digh sumber = + 999, The greatest 2-digit number = + 99, Their sum = 11097, 11. Find the difference of place values, of 6 and 7 in number 96074., , , , Sol., The place value of 6 in 96074 = 6000, The pluce value of 7 in 96074 = — - 70, , , , Their difference = _5930, 12. Sebtract 45555 from 6 digit, , smnallest number., Sel. The small number of 6 digits, = 100000, , The given number = - 45555, Their difference = 54445, 1% Satnam had % 8765 with him. His, ancle gave him 7 2500. Satnam, gave 7 4770 to his sister out of his, total money. How much money, was left with him 7, ' Sel. Amount of money Satnam had, = & $765, Amount of money his uncle, gave him = + & 2500, Total amount of moncy Satara, had mow = 7 11265, Amount of moncy Satnam, gave to her aster « ~ 7 4770, Amount of moncy left, with Satnem = 7 6495, 14. Mandeep had & 10000. He bought, a pair of shoes for T 1050 and a, soit for T 3600. How much money, , , , eases wu ", PSI NEA POS YES REAL ANSA NN NISRA DSA condensin Nia
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Sol. Cost price of a pair of shoes, , , , = % 1050, Cost price of the suit = + % 3600, Cost price of both = 4650, , , , Mandeep had money, with him = % 10000, , Amount spent = — = 4650, Amount left = % 5350, , 15. Sandeep has = 78500 in his bank, account. How much more amount, should he deposit in the account, so that he has % 100000 in his, , , , , , , , account ? =, Sol. Amount required in the account, = % 100000, Amount of money Sandeep had, in the account =~ % 78500, Amount that should, be deposited = % 21500, , 16. A person travels 165 km by car, from Pathankot to Kashmir. Next, day, he drives 138 km from, Kashmir to Leh. How much, distance did he cover ?, , Sol. Distance travelled on the first day, , = 165 km., Distance travelled on the, , second day = 138 km., Total distance travelled in, , the two days. = 303 km., , Th, , , , re,, , alain e as « Teh ee
