Page 293 - Start Up Mathematics_6

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Chapter 1 6. (a) 5,000 (b) 1,000 (c) 2,000 (d) 1,000
Exercise 1.1 7. (a) 3,000 (b) 2,100 (c) 2,400 (d) 2,000
1. (a) 95,00,322 (b) 40,00,01,030 (c) 2,000,365,728 8. (a) 3,00,000 (b) 40,000 (c) 50,000 (d) 40,000
(d) 225,716,402 9. (a) 15,000 (b) 15,00,000
(c) 10,00,000 (d) 3,00,000
2. (a) 6,87,54,329—Six crore eighty-seven lakh fifty-four 10. (a) 30 (b) 30 (c) 30 (d) 35
thousand three hundred twenty-nine
(b) 7,39,87,021—Seven crore thirty-nine lakh eighty- Exercise 1.4
seven thousand twenty-one 1. (a) 140 (b) 92 (c) 100 (d) 500
(c) 9,37,54,081—Nine crore thirty-seven lakh fifty-four (e) 25,830 (f) 9,975
thousand eighty-one 2. (a) XXII (b) XXVIII (c) XXXII (d) XLV
(d) 2,60,00,786—Two crore sixty lakh seven hundred (e) XLVII (f) LV (g) LXIV (h) LXXXI
eighty-six (i) XCIII (j) XCVII (k) CCCXXVI
3. (a) 98,765,434—Ninety-eight million seven hundred (l) DXLVIII (m) CMXCI (n) MCCVII
sixty-five thousand four hundred thirty-four (o) MMMCMXIX
(b) 76,382,949—Seventy-six million three hundred 3. (a) 17 (b) 24 (c) 45 (d) 51
eighty-two thousand nine hundred forty-nine (e) 92 (f) 95 (g) 187 (h) 383
(c) 45,654,670—Forty-five million six hundred fifty-four (i) 449 (j) 1,455 (k) 1,725 (l) 3,521
thousand six hundred seventy
(d) 14,367,856,792—Fourteen billion three hundred Review Exercises
sixty-seven million eight hundred fifty-six thousand Multiple Choice Questions
seven hundred ninety-two 1. b 2. d 3. d 4. b 5. c
4. (a) 1,000 (b) 1,000 (c) 1,000 6. d 7. c 8. b
5. (a) 2 × 1,00,00,000 + 4 × 10,00,000 + 3 × 1,00,000 + 4 Solve Mentally
× 10,000 + 5 × 1,000 + 8 × 100 + 9 × 10 + 2 × 1 True or False
(b) 6 × 1,00,00,000 + 7 × 10,00,000 + 8 × 1,00,000 + 9 1. True 2. True 3. False 4. True 5. True
× 10,000 + 2 × 1,000 + 8 × 100 + 3 × 10 + 1 × 1
(c) 4 × 10,00,000 + 5 × 1,00,000 + 7 × 10,000 + 3 × Fill in the Blanks
1,000 + 9 × 100 + 1 × 10 + 0 × 1 1. 3 2. 700 3. L, C 4. 800 5. 1,000
(d) 2 × 1,00,00,000 + 3 × 10,00,000 + 4 × 1,00,000 + 5 Answer in One Word or a Line
× 10,000 + 6 × 1,000 + 4 × 100 + 1 × 10 + 0 × 1 1. 4 2. 1 3. 1,000 kg 4. M 5. 6,300
6. 69,99,993 7. 90,00,000 8. 79,99,992 Let’s Evaluate
9. 5,67,34,523
10. 34,56,678 < 73,62,678 < 78,46,120 < 3,49,67,880 < 1. (a) 16,40,10,249 (b) 7,02,00,087
8,97,62,187 2. (a) Seven crores twenty-three lakh fifty-six thousand seven
hundred eight
11. 7,97,62,187 > 79,02,678 > 78,98,120 > 49,67,890 > (b) Twenty-seven lakh fifty-seven thousand two
34,56,658
3. (a) 5 × 1,00,00,000 + 3 × 10,00,000 + 5 × 1,00,000 + 2
Exercise 1.2 × 10,000 + 3 × 1,000 + 9 × 100 + 8 × 10 + 1 × 1
1. 1,28,84,358 2. ` 7,74,588 3. 34,41,570 (b) 3 × 10,00,00,000 + 4 × 1,00,00,000 + 4 × 10,00,000
4. (a) 10 (b) 100 5. 13,42,691 + 9 × 1,00,000 + 2 × 10,000 + 8 × 1,000 + 8 × 100
6. 91,05,345 7. 15,01,882 8. 14 L 655 mL + 7 × 10 + 6 × 1
9. ` 18,95,775 10. ` 3,84,42,420 11. ` 14,29,53,720 4. 6,99,999,300 5. 90,000
12. 75,195 13. 12.5 m 14. 8 6. Ascending: 3,27,896 < 5,64,585 < 45,87,692 < 56,45,389
15. 11 trousers; 70 cm < 4,75,63,892
Exercise 1.3 Descending: 4,75,63,892 > 56,45,389 > 45,87,692 >
1. (a) 110 (b) 120 (c) 1,610 (d) 1,000 5,64,585 > 3,27,896
2. (a) 1,000 (b) 1,500 (c) 1,700 (d) 12,800 7. ` 25,34,698 8. 1,30,248 9. 110 cups
3. (a) 1,34,000 (b) 79,000 (c) 79,000 (d) 66,000 10. (a) 32 (b) 95 (c) 764 (d) 220
4. (a) 30 (b) 260 (c) 240 (d) 190 (e) 1,006 (f) 84
5. (a) 300 (b) 200 (c) 500 (d) 400 11. (a) 1,500; 1,443 (b) 12,000; 12,213