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\ 31-Oct-2023 Bharat Arora P-1 Reader’s Sign _______________________ Date __________

Answers

Chapter 1. Large Numbers Practice Time 1D
Let’s Recall 1. Digits Greatest number Smallest number
1. (a) Four thousand three hundred seventy-nine (a) 2,7,3,5,1 75321 12357
(b) Eight thousand nine hundred (b) 7,5,4,8,0 87540 40578
(c) Seven thousand one hundred fifty-nine (c) 9,8,3,0,2,6 986320 203689
(d) Nine thousand nine hundred ninety-nine
2. (a) 3720 (b) 5862 (c) 8088 (d) 5009 (d) 0,1,9,6,3,7 976310 103679
3. (a) 300 (b) 0 (c) 6688 (d) 6,6,7,4 (e) 6236 2. Digits Greatest 5-digit number Smallest 5-digit number
Practice Time 1A (a) 5, 8, 3, 4 88543 33458
1. Lakhs (L) Ten Thousand Thousands Hundreds Tens Ones (O) (b) 6,0,7 77760 60007
(100000) (TTh) (10000) (Th) (1000) (H) (100) (T) (10) (1) (c) 2,7,8 88872 22278
(d) 9,6,0 99960 60009
(a) 3 7 0 3 6
(e) 5,0 55550 50000
(b) 4 3 6 4 5
3. Digits Greatest 6-digit number Smallest 6-digit number
(c) 3 8 6 4 4 9
(a) 1,9,7,5,0 997510 101579
(d) 6 4 0 3 9 6 (b) 2,4,6,8 888642 222468
2. (a) 36413 (b) 43098 (c) 490223 (d) 704089 (c) 3,7,0,9 999730 300079
3. (a) 32,064; Thirty-two thousand sixty-four (d) 6,8,9 999986 666689
(b) 36,379; Thirty-six thousand three hundred seventy-nine (e) 4,7 777774 444447
(c) 94,008; Ninety-four thousand eight Practice Time 1E
(d) 27,114; Twenty-seven thousand one hundred fourteen 1. (a) 840 (b) 790 (c) 1000 (d) 3270
(e) 4,13,066; Four lakh thirteen thousand sixty-six (e) 7550 (f) 9050 (g) 10,200 (h) 14,560
(f) 7,36,395; Seven lakh thirty-six thousand three hundred ninety-five 2. (a) 2800 (b) 4600 (c) 5100 (d) 9400
(g) 4,49,078; Four lakh forty-nine thousand seventy-eight (e) 7500 (f) 14,700 (g) 32,200 (h) 43,600
(h) 2,57,141; Two lakh fifty-seven thousand one hundred forty-one 3. (a) 23000 (b) 44000 (c) 60000 (d) 124000
5. (a) 52,483; Fifty-two thousand four hundred eighty-three (e) 346000 (f) 986000 (g) 754000 (h) 833000
(b) 60,135; Sixty thousand one hundred thirty-five Practice Time 1F
(c) 5,42,638; Five lakh forty-two thousand six hundred thirty-eight 1. (a) XVI (b) XXV (c) XXXIX (d) XXVII
6. (a) 56,202; 56,203; 56,204; 56,205; 56,206; 56,207; 56,208; 56,209; 2. (a) 18 (b) 29 (c) 37 (d) 34
56,210; 56,211; 56,212; 56,213; 56,214; 56,215; 56,216; 56,217; 56,218 3. (a) XXVI (b) XXXI (c) XIX (d) IX (e) XIV
(b) 44,445; 44,446; 44,447; 44,448; 44,449; 44,450; 44,451; 44,452; Mental Maths
44,453; 44,454; 44,455; 44,456; 44,457; 44,458; 44,459 1.
(c) 29,057; 29,058; 29,059; 29,060; 29,061; 29,062; 29,063; 29,064 (c) 2. (c) 3. (a) 4. (d) 5. (a) 6. (c)
(d) 53,496; 53,497; 53,498; 53,499; 53,500; 53,501; 53,502; 53,503; Brain Sizzlers
53,504; 53,505; 53,506; 53,507; 53,508; 53,509 1. 98760 2. 123450 3. 987065
Think and Answer Chapter Assessment
1. 1,00,000 2. 6 1. (a) (iii) (b) (i) (c) (ii) (d) (iv)
2.
(c) 0
Practice Time 1B 3. (a) 5; 5000 (b) 8 (b) (iiii) (d) 7 (e) 4 (d) (i)
(a) (ii)
(c) (iv)
1. (a) 900 (b) 70000 (c) 7000 (d) 0 (e) 400000 (f) 0 4. (a) 3 (b) 5 (c) 4
2. (a) 47889 = 40000 + 7000 + 800 + 80 + 9 5. (a) 56,307; 56,309 (b) 2,10,500; 2,10,300
(b) 80791 = 80000 + 700 + 90 + 1 (c) 5,82,354; 7,82,354
(c) 578914 = 500000 + 70000 + 8000 + 900 + 10 +4 6. (a) 105788, 105888, 105988 (b) 694345, 695345, 696345
(d) 800450 = 800000 + 400 + 50 7. Three lakhs twenty-five thousand five hundred one
3. (a) 308960 (b) 143629 (c) 875402 8. Current year 9. Narayan’s father
4. (a) 34363, 34365 (b) 73647, 73649 (c) 11142, 11144 10. 90,000 11. 10001, 100001 (Answer may vary) (d) XIV, XVI
12. (a) XXIII, XXV
(b) XXXVI, XXXVIII (c) IX, XI
(d) 840067, 840069 (e) 154835, 154837 (f) 199998, 200000
5. (a) 60006 (b) 39996 Chapter 2. Addition and Subtraction
Practice Time 1C Let’s Recall
1. (a) < (b) < (c) > (d) < 1. (a) 5999 (b) 2714 2. 3656
2. (a) Greatest no.: 87,856 Smallest no.: 38,857 3. Total population = 994, difference of their Population = 158
(b) Greatest no.: 4,88,332 Smallest no.: 45,657 4. Samina, 34 words more
(c) Greatest no.: 6,45,562 Smallest no.: 6,45,172 Practice Time 2A
(d) Greatest no.: 5,78,960 Smallest no.: 5,68,960 1. (a) 94654 (b) 379339 (c) 869689 (d) 934161
3. (a) 27,656 < 27,895 < 75,690 < 88,975 (e) 942866 (f) 527824
(b) 39,850 < 39,856 < 39,876 < 49,560 2. (a) 455743 (b) 989999 (c) 688994 (d) 789999
(c) 26,565 < 2,56,561 < 2,56,563 < 2,56,567 (e) 879384 (f) 929958
(d) 17,654 < 3,76,946 < 6,76,546 < 8,56,565; Practice Time 2B
4. (a) 42,560 > 42,206 > 42,105> 42,103 1. (a) 1 (b) 1 (c) 2436 (d) 0
(b) 68,987 > 68,978 > 68,968 > 68,960 (e) 0 (f) 9999 (g) 246 (h) 4021
(c) 7,79,568 > 7,79,567 > 7,59,678 > 7,59,576; 2. (a) 108 (b) 172 (c) 448 (d) 78
(d) 9,99,999 > 9,96,999 > 9,89,999 > 9,83,456 (e) 740 (f) 199 (g) 735 (h) 409

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