(4) Find using distributive property (a) 728 × 101 Sol. = 728 × 101Distributing 101 into (100 + 1)= 728 × (100 + 1)= 728 × 100 + 728 × 1= 72800 + 728 = 73528 Ans. (b) 5437 × 1001= 5437 × 1001Distributing 1001 into (1000 + 1)= 5437 × (1000 + 1)= 5437 × …
(1) Which of the following will not represent zero: (a) 1 + 0 Sol. = 1 + 0= 1 (because any number added with 0 gives the number itself) Here, the answer is 1. Therefore, it is not representing zero. b) 0 × 0Sol. = 0 × 0= 0 (because if any number is multiplied by …
(5) A taxi driver filled his car petrol tank with 40 liters of petrol on Monday. The next day, he filled the tank with 50 liters of petrol. If the petrol costs Rs. 44 per liter, how much did he spends in all on petrol? Sol. According to the question, Cost of 1 liter …
(3) Find the value of the following: (a) 297 × 17 + 297 × 3 Sol. = 297 × 17 + 297 × 3= 297 x (17 + 3) ………………. taking 297 common= 297 x 20 = 297 x 2 x 10= (297 x 2) x 10 = 594 x 10 = 5940 Ans b) 54279 × …
(1) Find the sum by suitable rearrangement: (a) 837 + 208 + 363 Sol. (Note – In order to make the process convenient, making group of two such numbers whose addition will give 0 in one’s place.)Here, we will make group of 837 and 363 because the sum of their one’s digit i.e. 7 + …
(6) Write the predecessor of: a. 94Predecessor means deduction of 1.94 – 1 = 9393 (Ans) b. 10000Predecessor means deduction of 1.10000 – 1 = 99999999 (Ans) c. 208090Predecessor means deduction of 1.208090 – 1 = 208089208089 (Ans) d. 7654321Predecessor means deduction of 1.7654321 – 1 = 76543207654320 (Ans) (7) In each of the following …
(1) Write the next three natural numbers after 10999 Next three natural numbers after 10999 are – 10999 + 1 = 11000 11000 + 1 = 11001 11001 + 1 = 11002 Hence, next three natural numbers are 11000, 11001 and 11002 (2) Write the three whole numbers occurring just before 10001 …