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(m) 3200 (n) 1500 B. (a) 7000 (b) 9000 (c) 9100 (d) 9200 (e) (j) Q = 58, R = 6 B. (a) 278 (b) 247 (c) 97 (d) 85 (e) 49 (f) 83 (g)
4860 (f) 8100 (g) 5310 (h) 7600 (i) 9600 (j) 15900 (k) 17200 (l) 128 (h) 96 (i) 128 (j) 664 (k) 1384 (l) 956 (m) 1625 (n) 1880 (o)
10200 (m) 6320 (n) 8700 Mental Maths-3 A. (a) 426 (b) 936 1747 (p) 962 Mental Maths-7 (a) 92 books (b) `895 (c) 126 (d)
(c) 808 (d) 396 (e) 846 (f) 684 (g) 8048 (h) 6864 (i) 9280 (j) 9360 127 students (e) `575 (f) 253 litre (g) 335 bulbs (h) 1155 books,
(k) 8448 (l) 8686 B. (a) 945 (b) 992 (c) 981 (d) 776 (e) 867 (f) left 5 books (i) 429 flowers, left 8 flowers (j) 532 apples, left 1
897 (g) 910 (h) 990 (i) 973 (j) 6183 (k) 7008 (l) 3522 (m) 6755 apple
(n) 2340 (o) 8991 Mental Maths-4 (a) 6232 (b) 5460 (c) 5301 Miscellaneous Questions: 1. Q = 3, R = 2 2. (a) Q = 3214 R =
(d) 4984 (e) 4704 (f) 6776 Mental Maths-5 A. (a) 8208 (b) 0 (b) Q = 2101 R = 0 (c) Q = 2311, R = 2 (d) Q = 1021, R = 2 (e)
9724 (c) 9555 (d) 9693 (e) 9900 (f) 9215 (g) 1102 (h) 754 (i) Q = 244, R = 0 (f) Q= 74, R = 0 (g) Q = 927, R = 0 (h) Q = 662,
1152 B. (a) 8464 (b) 5475 (c) 1869 (d) 1925 (e) 4977 (f) 3111 (g) R = 1 3. (a) 95 (b) 1 (c) 0 (d) 828 (e) 0 (f) 847 (g) 1543 (h) 0 (i) 1
1911 (h) 459 (i) 989 (j) 912 (k) 1176 (l) 675 C. (a) 6831 (b) 6358 (j) 7 (k) 56 (l) 638 (m) 9 (n) 3 4. (a) Q = 9, R = 3 (b) Q = 3, R =
(c) 9555 (d) 4950 (e) 7625 (f) 9198 (g) 8352 (h) 8768 (i) 8502 (j) 25 (c) Q = 56, R = 52 (d) Q = 56, R = 20 (e) Q = 350, R = 1 (f) Q
4774 D. (a) 9660 (b) 3177 (c) 9304 E. (a) 3750 (b) 8400 (c) = 58, R = 6 5. 453 per day 6. 278 litres
7553 (d) 1920 (e) 2000 (f) 4410 (g) 8710 (h) 1410 (i) 8100 (j) Multiple Choice Questions: 1. (a) 2. (c) 3. (c) 4. (b) 5. (b) 6.
7000 (k) 8840 (l) 9500 Mental Maths-6 A. (a) 2632 (b) 3264 (a) 7. (a) 8. (b)
(c) 2890 (d) 672 J. (a) 8192 (b) 4375 (c) 9688 (d) 9288 (e) 9900
HOTS Questions: 1. 13 2. Multiplication of divisor X first
(f) 9984 digit of quotient is wrong, 5 × 7 = 35, correct Q = 76, R = 2
Miscellaneous Questions: 1. (a) 60 (b) 112 (c) 60 (d) 78 (e) 6. Fractional Numbers
112 (f) 99 (g) 80 (h) 84 (i) 104 (j) 90 (k) 135 (l) 136 (m) 76 (n)
Mental Maths-1 A. (a) T (b) X (c) X (d) T (e) X (f) X B. Do your
108 (o) 114 (p) 126 (q) 171 (r) 144 2. (a) 1542; 3275 (b) 0 (c)
5
2
4
2
3
10
2546 (d) 1 (e) 4200 (f) 8000 (g) 1000 (h) 136 (i) 1120 (j) 900 3. self C. (a) (b) (c) (d) (e) (f) Mental
(a) 1981 (b) 3384 (c) 7648 (d) 3948 (e) 4698 (f) 8568 4. 4320 5. 6 8 12 2 4 3 16 3 9
9996 6. (a) 1 (b) 0 (c) 0 (d) 1 (e) 1 (f) 2696 (g) 2651; 4386 (h) 9 7. Maths-2 A. Do your self B. (a) (b) (c) C. (a) 4 ,
5 7 8 5
(a) 1600 (b) 5400 (c) 9000 (d) 7500 (e) 1000 (f) 6970 (g) 7000 2 , 1 , (b) 3 1 2 5 (c) 3 4 6 7 Mental Maths-3
,
,
,
,
,
,
(h) 7800 8. (a) 78 (b) 99 (c) 120 (d) 96 (e) 112 (f) 90 (g) 102 (h) 5 5 7 2 7 7 9 9 9 9
,
,
,
128 (i) 126 (j) 144 (k) 133 (l) 136 (m) 910 (n) 1120 (o) 960 (p) A. (a) > (b) < (c) (d) < (e) > (f) < B. (a) 4 5 7 8
9 9 9 9
9000 9. `400 10. 360 km 11. 60 sweets 12. `1200 13. `91 14. 1 3 5 6
,
,
,
,
,
,
(b) , , , (c) 2 3 5 6 C. (a) 5 3 2 1
162 kg 15. 480 strings 8 8 8 8 7 7 7 7 6 6 6 6
Multiple Choice Questions: 1. (b) 2. (c) 3. (d) 4. (d) 5. (d) 6. (b) 9 , 8 , 7 , 4 (c) 10 7 , 6 , 5 D. (a) > (b) < (c) =
,
(b) 10 10 10 10 13 13 13 13 6 6
2
2
HOTS Questions: 1. Write tens below tens and hundreds (d) < Mental Maths-4 A. (a) (b) (c) (d)
6 10 9 8
below hundreds; 1219 2. 50 km 3 3 5 7 7 5 2
B. (a) (b) (c) (d) (e) (f) C. (a)
5. Division 4 5 7 8 10 6 5
Mental Maths-1 A. (a) 2 (b) 5 (c) 3 (d) 4 (e) 4 (f) 6 (g) 6 (h) 5 (i) 2 2 1 3 4
(b) (c) (d) (e) (f)
10 (j) 4 B. (a) 5 (b) 4 (c) 5 C. (a) 5; 20; 4; 5 (b) 4; 28; 7; 4 (c) 6; 36; 6 9 7 10 12
,
,
,
6; 6 Mental Maths-2 (a) 5 (b) 4 (c) 3 Mental Maths-3 A. (a) Q Miscellaneous Questions: 1. Do your self 2. (a) 6 1 7 3
8 8 8 8
= 4, R = 2 (b) Q = 4, R = 2 (c) Q = 3, R = 3 B. (a) 95 (b) 1 (c) 0 5 4 6 3 2 3 7 8
,
,
,
,
,
,
(d) 458 (e) 0 (f) 1 (g) 6483 (h) 0 (i) 1 (j) 828 (k) 0 (l) 847 (m) 1543 (b) 9 9 9 9 3. (a) > (b) < (c) < (d) > 4. 9 9 9 9
(n) 0 (o) 1 (p) 1 Mental Maths-4 A. (a) odd (b) even (c) odd (d) 5. 9 , 7 , 6 , 4 6. (a) 2 (b) 8 (c) 15 7. (a) 5 (b) 6
odd (e) even (f) even (g) even (h) odd (i) even B. (a) Q = 323, R 10 10 10 10 8 12 35 7 9
12 2 2 4
= 0 (b) Q = 124, R = 0 (c) Q = 234, R = 0 (d) Q = 222, R = 0 (e) (c) 8. (a) (b) (c)
12 9 8 10
Q = 203, R = 0 (f) Q = 319, R = 1 (g) Q = 111, R = 0 (g) Q =
2101, R = 0 (i) Q = 3214, R = 0 (j) Q = 2311, R = 2 (k) Q = 7. Data Handling
2104, R = 1 (l) Q = 1021, R = 2 Mental Maths-5 A. (a) 64 (b)
Mental Maths- 1. Do yourself 2. Do yourself 3. Do yourself
75 (c) 157 (d) 260 (e) 55 (f) 638 (g) 56 (h) 30 (i) 7 (j) 7 (k) 8 (l) 4. (a) apple (b) papaya (c) 5 friends (d) mango and banana 5.
200 (m) 8 (n) 9 (o) 9 (p) 50 B. (a) 5 (b) 31 (c) 24 (d) 32 (e) 13 (f) (a) Marigold (b) Rose (c) 8 (d) 5 6. (a) guitar (b) trumpet (c) 5
31 (g) 20 (h) 21 (i) 23 (j) 19 (k) 12 (l) 11 C. (a) 123 (b) 210 (c)
drums (d) one 7. (a) Giant wheel (b) Topsy Turvy (c) 20 (d) 15
403 (d) 107 (e) 321 (f) 268 (g) 137 (h) 120 (i) 104 (j) 171 (k) 23
8. Symmetry and Pattern
(l) 111 D. (a) 1704 (b) 1330 (c) 1908 (d) 1827 (e) 1192 (f) 1008
Mental Maths- A. (a) yes (b) no (c) yes (d) no (e) yes (f) yes B.
(g) 1245 (h) 832 (i) 1191 (j) 2841 (k) 2222 (l) 2070 E. 1326 F.
Do yourself
1063 Mental Maths-6 A. (a) Q = 9, R = 3 (b) Q = 45, R = 2 (c)
9. Measurement
Q = 130, R = 2 (d) Q = 3, R = 25 (e) Q = 36, R = 72 (f) Q = 56,
Mental Maths-1 A. Do yourself B. (a) 804 (b) 416 (c) 505 (d)
R = 52 (g) Q = 56, R = 20 (h) Q = 14, R = 50 (i) Q = 350, R = 1
970 (e) 34;12 (f) 4 (g) 8; 5 (h) 15;30 (i) 7350 (j) 3000 (k) 2007 (l)
191
Answersheet
Mathematics-3