Page 135 - Genius Kids Math Marathon- 4

Exercise 10.6
5. 1. (a) 5 tenths; (b) 2 hundredths; (c) 3 thousandths; (d) 2
hundredths; (a) 0.5; (b) 1.1; (c) 1.86; (d) 0.6; (e) 68.67;
2.
(l) 34.568; 5.77; 10.565; 5.
3.
4.
Neha, 19.03 kg; 22.75.
6.
S. No. Hundreds Tens Ones Decimal Tenths Hundredths Thousandths (f) 1.38; (g) 75.9; (h) 5.02; (i) 6.87; (j) 55.679; (k) 0.563;
Exercise 10.7
1. (a) 48; (b) 37.5; (c) 123; (d) 0.7; (e) 157; (f) 67.34;
(a) 2 1 3 . 4 7 0
(g) 28.4; (h) 1327.2; (i) 124.6; (j) 1243.6; 2. (a) 372;
(b) 3 . 8 2 0 (b) 1508; (c) 673.2; (d) 8046; (e) 5; (f) 720; (g) 40; (h)
3.
(c) 6 . 5 9 2 877.4; (i) 643.2; (j) 7206; (a) 8340; (b) 2300; (c) 140280;
(d) 3700; (e) 6520; (f) 6412; (g) 98370; (h) 6040; (i) 12732;
(d) 4 . 6 3 0 (j) 91730.
(e) 1 . 0 0 6 Exercise 10.8
(f) 2 1 . 8 7 1. (a) 0.48; (b) 1.23; (c) 0.673; (d) 12.43; (e) 2.43; (f)
24.25; (g) 7.34; (h) 0.175; (i) 0.683; (j) 0.1473; (k) 0.903;
Exercise 10.2 (l) 1.1375; (m) 0.0273; (n) 0.853; (o) 1.164; (p) 0.672; (q)
8 5 2 7 8 0.0023; (r) 0.0143; (s) 0.37437; (t) 0.028; (u) 0.124; (v)
1. (a) 4 + ; (b) 6 + + ; (c) 10 + 2 + + ; (d)
10
10 100 100 0.0009; (w) 0.12435; (x) 0.0045.
10
4 3 3 5 6 Exercise 10.9
600 + 10 + 3 + + ; (e) 80 + 1 + + + ; (f)
10
1000 1000 1. (a) ` 2.50; (b) ` 10.10; (c) ` 4.45; (d) ` 20.01; (e) `
10
100
7 4 2 3
200 + 10 + 3 + + + ; (g) 600 + 40 + 8 + + 35.03; (f) ` 99.09; (g) ` 20.40; (h) ` 15.75; (i) ` 75.64;
10 100 10
1000
(j) ` 82.90; 2. (a) 0.400 km; (b) 0.500 km; (c) 0.618 km;
1 4 6 3
+ ; (h) 100 + 70 + 5 + + + ; (i) 80 + 8 + (d) 0.264 km; (e) 1 km; (f) 0.640 km; (g) 5.370 km; (h)
100
10
1000 1000 0.800; (i) 6.005 km; (j) 2.100 km; (k) 4.450 km; (l) 5.270 km;
8 + 8 + 8 ; (j) 7 + 3 ; 2. (a) 4.384; (b) 780.037; (m) 8.450 km; (n) 9.775 km; (o) 18.350 km; (a) 3.005 m;
3.
100
1000 1000
10
(b) 3.600 m; (c) 2.160 m; (d) 5.250 m; (e) 2 m; (f) 0.425 m;
(c) 53.004; (d) 323.204; (e) 0.269; (f) 7.056; 3. (a) 2.3; (b) (g) 0.480 m; (h) 9 m; (i) 6.735 m; (j) 6.8 m; (k) 8.640 m;
14.8; (c) 9.06; (d) 27.03; (e) 5.006; (f) 25.03; (g) 12.07; (h) (l) 48.300 km; (m) 7.500 km; (n) 9.376 km; (o) 52.475 m;
61.004; (i) 10.030; (j) 6.45; (k) 3.03; (l) 8.002. 4. (a) 4.370 kg; (b) 5.780 kg; (c) 2.250 kg; (d) 10.500 kg;
Exercise 10.3 (e) 6.750 kg; (f) 0.850 kg; (g) 6.840 kg; (h) 6.730 kg; (i)
4.354 kg; (j) 9.275 kg; (k) 9.250 kg; (l) 0.043 kg; (m) 9.370
1. (a) 4.80, 6.42; (b) 9.370, 4.623; (c) 8.480, 7.321; (d) kg; (n) 2.348 kg; (o) 15.375 kg; (a) 4 l; (b) 4.5 l; (c) 6.780
5.
5.300, 2.610, 7.425; (e) 19.300, 24.360, 7.415; (f) 15.30, l; (d) 9.250 l; (e) 8 l; (g) 0.650 l; (g) 0.055 l; (h) 0.092 l;
16.42; (g) 2.005, 3.200, 6.710; (h) 18.820, 24.002, 6.400; (i) 65.310 l; (j) 20.450 l; (k) 75 l; (l) 90 l; (m) 23.450 l;
(i) 20.720, 26.034. (n) 12.8 l; (o) 25.450 l.
Exercise 10.4 Exercise 11.1
1. (a) 0.39 < 2.24 < 4.8 < 5.31 < 9.67; (b) 0.089 < 3.76 < 4.3 2. (a) 8 cm; (b) 15 cm; (c) 8.4 cm; (d) 13 cm; (e) 16.6 cm;
< 4.866 < 8.53; (c) 2.76 < 5.835 < 10.987 < 15.87 < 23.97; 3. (a) 4 cm; (b) 5.25 cm; (c) 6 cm; (d) 7.5 cm; (e) 9 cm;
(d) 2.75 < 8.465 < 24.12 < 27.137 < 27.22; (e) 18.32 < 4. (a) 22 cm; (b) 44 cm; (c) 62.86 cm; (d) 110 cm; (e) 176 cm;
21.743 < 23.46 < 27.482 < 27.6; (f) 7.8 < 13.247 < 13.29 < 5. (a) 21 cm; (b) 7 cm; (c) 14 cm; (d) 42 cm; (e) 28 cm;
7.
9.
14.3 < 20.4; (g) 1.001 < 1.01 < 10.01 < 11.1 < 15.25; (h) 6. (a) OA, OB; (b) CB, OA (c) AB, OC diameter; (a) arc;
2.579 < 3.961 < 281.39 < 461.38; (i) 7.065 < 7.560 < 70.56 < (b) circumference; (c) equal; (d) p; 10. (a) T; (b) F; (c) T; (d) T.
70.65; (j) 5.55 < 5.555 < 55.555 < 555.55; (a) 14.28 > Exercise 12.1
2.
13.96 > 12.76 > 7.16 > 0.45 (b) 24.39 > 21.9 > 20.12 > 13.7
1. (a) 12 cm; (b) 17 cm; (c) 16 cm; (d) 18 cm; (e) 20 cm; (f)
> 0.76; (c) 14.124 > 5.8 > 5.28 > 4.68 > 0.3; (d) 11.01 > 1.14 16 cm; (a) 28 cm; (b) 22 cm; (c) 46 cm; (d) 380 cm; (e)
2.
> 1.001 > 0.011 > .01; (e) 777.77 > 777.7 > 77.77 > 7.777 > 108 cm; (f) 72 m; 3. (a) 16 cm; (b) 28 cm; (c) 48 cm; (d) 60
7.77; (f) 96.69 > 69.96 > 9.969 > 9.699 > 9.696; (g) 15.25 > cm; (e) 24 m; (f) 80 cm.
11.1 > 10.01 > 6.472 > 1.001; (h) 344.34 > 34.3 > 4.43 >
4.34 > 3.44; Exercise 12.2
2
2
2
2
1. (a) 18 m ; (b) 21.25 cm ; (c) 170 m ; (d) 375 cm ;
Exercise 10.5
2
2. (a) 196 cm ; (b) 4225 cm ; (c) 240.25 m ; (d) 420.25 cm ;
2
2
2
1. (a) 1.2; (b) 12.2; (c) 6.59; (d) 15.78; (e) 17.17; (f) 13.39; 3. (a) 20 cm; (b) 5 m; (c) 70 cm; (d) 20 m; 4. (a) 27 cm; (b)
(g) 24.92; (h) 9.37; (i) 37.33; (j) 550.818; (k) 23.12; 20 m; (c) 20 cm; (d) 15 m; 5. (a) 46 m ; (b) 102 m ; 6. (a)
2
2
(l) 1388.33; 2. (a) 18.13; (b) 32.093; (c) 22.59; (d) 89.89; 2 2 2
7
(e) 212.087; (f) 97.397; 3. 210.750 km; 4. 25.40 m; 24 cm, 35 cm ; (b) 20 m, 24 m ; (c) 10 m, 6 m ; (d) 600 cm,
2
2
2
5. ` 526.25; 6. 95.550 kg. 100 20,000 cm ; (e) 240 cm, 2000 cm ; (f) 400 cm, 7500 cm ; 7.
2
2
2
(a) 24 cm, 36 cm ; (b) 30 cm, 56.25 cm ; (c) 20 m, 25 m ;
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135 Mathematics–4
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