Page 133 - Genius Kids Math Marathon- 4

Exercise 2.1 Exercise 5.2
1. (a) XXIX; (b) XLVIII; (c) LVII; (d) LXIX; (e) LXXXVIII; 1. City A, 4,465; 2. 8,24,177; 3. ` 6,752; 4. 1,450 stamps;
(f) XCIII; (g) CLXXXIV; (h) CCLXXVIII; (i) CCCXV; (j) 5. 1,09,592; 6. 67,445; 7. 1945; 8. 22,680; 9. 88,707;
CCCLXXVIII; (k) CDXVI; (l) D; (m) DXIII; (n) DCXVIII; (o) 10. 2222 copies;
DCXCVIII; 2. (a) 25; (b) 43; (c) 76; (d) 81; (e) 86; (f) 95; (g) Exercise 5.3
99; (h) 108; (i) 261; (j) 303; (k) 306; (l) 405; (m) 456; (n)
3.
284; (o) 400; (a) <; (b) >; (c) <; (d) >; (e) <; (f) <; (g) >; 1. (a) 10, 9; (b) 20, 23; (c) 30, 35; (d) 50, 57; 2. (a) 4700,
3.
(h) >; (i) >; (j) <; (k) <; (l) <; (a) 14; (b) 15; (c) 63; (d) 4737; (b) 1800, 1729; (c) 6700; 6737 (d) 3600; 3587 (a)
4.
5.
210; (e) 41; (f) 21; (g) 21; (h) 14; (i) 126; (a) 32; (b) 19; 1450, 1448; (b) 4320, 4329; (c) 7520, 7515; (d) 4100, 4101
(c) 5; (d) 12; (e) 80; (f) 34; (g) 36; (h) 68; (i) 50. Exercise 6.1
Exercise 3.1
1. (a) 18; (b) 275; (c) 15; (d) 10; (e) 8; (f) 0; (g) 17; (h) 11;
1. (a) 28; (b) 20; (c) 5, 7; 35 (d) 12, 5,60 2. (a) 2, 6; (b) 6, 2. (a) 30; (b) 800; (c) 750; (d) 800; (e) 1900; (f) 7600;
3.
4; (c) 7, 6; (d) 9, 5; (e) 9, 6; (f) 9, 8; (a) 2 × 2 × 3 × 3 (g) 21000; (h) 98000; (i) 842000; (a) 80; (b) 210; (c) 600;
3.
(b) 2 × 2 × 11 (c) 2 × 2 × 2 × 2 × 2 × 2 (d) 2 × 2 × 5 × 5 (e) (d) 50400; (e) 52000; (f) 31200; (g) 56000; (h) 320000; (i)
2 × 2 × 2 × 3 × 5 (f) 2 × 5 × 3 × 5.4. (a) 2 × 2 × 2 × 3 (b) 2 152000; 4. (a) 1200; (b) 8500; (c) 18000; (d) 12000; (e)
× 2 × 2 × 2 × 3 (c) 3 × 5 × 5 (d) 2 × 2 × 2 × 2 × 7 (e) 2 × 2 × 224000; (f) 210000; (g) 16800; (h) 75000; (i) 171000.
2 × 2 × 3 × 3 (f) 2 × 2 × 2 × 5 × 5.
Exercise 6.2
Exercise 3.2
1. (a) 8,334; (b) 27,166; (c) 6,63,884; (d) 1,81,440;
1. (a) 24, 30, 36, 42, 48; (b) 44, 55, 66, 77, 88; (c) 84, 105, (e) 15,72,288; (f) 94,40,525; (g) 35,14,538; (h) 2,44,28,186;
126, 147, 168; (d) 100, 125, 150, 175, 200; 2. (a) 87, 174, 2. (a) 228; (b) 392; (c) 41,952; (d) 10384; (e) 15476; (f)
261, 348, 435; (b) 14, 28, 42, 56, 70; (c) 18, 36, 54, 72, 90; 11,661; (g) 58,764; (h) 39,444; (i) 84,455; (j) 54,188.
(d) 20, 40, 60, 80, 100; (e) 30, 60, 90, 120, 150; (f) 35, 70, Exercise 6.3
4.
105, 140, 175; Yes; No; Yes; 6. 288; 144; 1.
5.
3.
8.
7.
1. (a) 60,760; (b) 1,25,851; (c) 1,62,624; (d) 8,94,960;
Exercise 3.3
(e) 17,47,264; (f) 18,29,484; (g) 1,05,02,266; (h) 5,07,00,395;
3. 2, 8; 4. 5, 9, 11, 17, 21, 35; 5. 43, 45, 47, 49, 51, 53, 55, 2. (a) 16,740; (b) 68,448; (c) 11,73,432; (d) 16,37,252; (e)
6.
57, 59; 82, 84, 86, 88, 90, 92, 94, 96, 98. 24,81,477; (f) 24,15,736; (g) 8,81,250; (h) 1,56,78,528.
Exercise 4.1 Exercise 6.4
1. (a) 1,03,621; (b) 1,12,911; (c) 1,50,831; (d) 8,36,110; 1. 36000 pages; 2. ` 1,43,010; 3. ` 437250; 4. 4,05,072
(e) 8,45,145; (f) 16,23,027; 2. (a) 8,24,846; (b) 22,68,177; articles; 5. ` 2,31,625; 6. ` 42,750; 7. 26,46,250 feet;
(c) 47,17,296; (d) 12,90,385; (e) 1,18,54,073; (f) 8. 8000 letters; 9. ` 11,75,000; 10. ` 87,500.
1,01,81,950; (g) 11,26,484; (h) 79,41,856;
Exercise 6.5
Exercise 4.2
1. (a) 1000; (b) 4000; (c) 1600; (d) 2000; (e) 6000; (f)
1. (a) 26,745; (b) 7,32,845; (c) 22,340; (d) 6,73,240; 28000; (g) 32000; 2. (a) 3600; (b) 5400; (c) 3500; (d) 4000;
(e) 5,329; (f) 21,486; (g) 0; (h) 94,321; (i) 99,999; 3. (a) 2100; (b) 1200; (c) 7200; (d) 800; 4. (a) 80000;
(j) 2,22,222. (b) 90000; (c) 100000; (d) 80000.
Exercise 4.3 Exercise 7.1
1. 65,853 toys; 2. ` 89,775; 3. 7,22,655; 4. 8,59,675 fruits; 1. (a) meaningless; (b) 642; (c) 735; (d) 1; (e) meaningless;

8.

7.

6.
5. 2,09,502 books; 90,600; 1,15,324; 17,73,074 litres; (f) 1; (g) 2452; (h) 1; (i) 0; (j) 200.
9. ` 6,77,020; 10. 92,535; 11. ` 74,220; 12. ` 9,66,135; 13.
73,812; 14. ` 16,725; 15. ` 97,020; Exercise 7.2
Exercise 4.4 1. (a) Q 927, R 3; (b) Q 913; (c) Q 1209; (d) Q 49, R 3;
(e) Q 6658; (f) Q 1780, R 3; (g) Q 4701, R 2; (h) Q 1489, R
1. (a) 130, 126; (b) 150, 153; (c) 150, 147; (d) 130, 123; 17; (i) Q 125494 R 2; (j) Q 62557, R 4; (k) Q 156273 R 4;
2. (a) 1100, 1093; (b) 900, 882; (c) 6600, 6557; (d) 9500, (l) Q 2708, R 84; 2. (a) Q 540, R 3; (b) Q 1080, R 3; (c) Q
9510; (a) 6860, 6859; (b) 8990, 8983; (c) 1740, 1744; 270, R 3; (d) Q 144, R 4; (e) Q 7494, R 3; (f) Q 6429, R 1;
3.
(d) 15610, 15613; 4. (a) 91000, 90909; (b) 87000, 87224; (g) Q 2668, R 2; (h) Q 3182 R 5.
(c) 80000, 80193; (d) 86000, 86668.
Exercise 7.3
Exercise 5.1
1. (a) Q 334, R 7; (b) Q 365, R 23; (c) Q 192, R 25; (d) Q 384;
1. (a) 26,779; (b) 48,389; (c) 72,279; (d) 78,809; (e) (e) Q 1344, R 16; (f) Q 1187, R 27; (g) Q 2169, R 36; (h) Q 164;
2,86,826; (f) 6,95,769; 2. (a) 19,043; (b) 46589; (c) 61,393; (i) Q 4105, R 18; (j) Q 4367, R 16; (k) Q 10648; (l) Q 144; (m) Q
3.
(d) 2,39,502; (e) 12; (f) 50772; (a) 23,156; (b) 2,601; (c) 13303, R 1; (n) Q 6544, R 17; (o) Q 14972, R 38; (p) Q 131, R 6.
24,713; (d) 4,125; (e) 47,833; (f) 778
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