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Exercise 9E 6. a. 24 cm b. 16 cm c. 20 cm d. 42 cm
1. a. 7 kg b. 9 kg c. 26 kg d. 48 kg 7. 44 cm 8. 44 m 9. 48 m
2. a. 6 kg 300 g b. 4 kg 323 g c. 5 kg 908 g d. 3 kg 65 g Exercise 10B
3. a. 5 g 605 mg b. 6 g 463 mg c. 5 g 897 mg d. 27 g 980 mg 1. a. ii b. ii c. i
e. 78 g 970 mg f. 44 g 2. a. 12 sq. cm b. 9 sq. cm c. 6 sq. cm d. 10 sq. cm
4. a. Vitamin A: 5190 mg, Vitamin B: 1253 mg, Vitamin C: 1490 mg e. 14 sq. cm f. 8 sq. cm g. 19 sq. cm h. 19 sq. cm
b. Vitamin A: 3956 mg, Vitamin B: 2990 mg, Vitamin C: 4530 mg i. 13 sq. cm j. 12 sq. cm k. 8 sq. cm
c. Vitamin A: 4082 mg, Vitamin B: 1006 mg, Vitamin C: 1013 mg
Exercise 9F 3. a. b. c. (Answer may vary)
1. a. 587 kg 204 g b. 421 kg 554 g c. 739 kg 801 g
2. a. 62 kg 614 g b. 54 kg c. 94 kg 479 g
d. 501 g 420 mg
3. a. 65 kg 231 g b. 162 kg 935 g c. 104 kg 175 g 4. Yes, (Answer may vary)
4. a. 2 kg 16 g b. 40 kg 666 g c. 11 g 701 mg
d. 22 kg 885 g Perimeter = 12 units Perimeter = 20 units
5. a. 11 kg 675 g b. Banana and Kiwi Learning Logs
c. Apple and Banana d. 79 kg 885 g 1. a. E b. C c. A, B
Exercise 9G 2. a. 19 cm b. 18 cm c. 25 cm d. 24 cm e. 16 cm f. 20 cm
1. a. 26000 L b. 30000 L c. 156000 L d. 12470 L 3. a. 20 cm, 16 sq. cm b. 16 cm, 16 sq. cm c. 12 cm, 6 sq. cm
e. 63065 L f. 315008 L d. 14 cm, 9 sq. cm 5. 16 m
2. a. 13000 mL b. 16000 mL c. 11000 mL d. 15350 mL
e. 26050 mL f. 116580 mL Mental Maths
3. a. 13 kL b. 12 kL c. 6 kL 352 L d. 2 kL 8 L 1. c 2. c 3. c 4. b 5. a
4. a. 4 L 500 mL b. 8 L 756 mL c. 9 L 767 mL d. 1 L 808 mL HOTS b. c.
1. a.
5. a. 1000 mL b. 3000 mL c. 4000 mL
Exercise 9H
1. a. 98 L 352 mL b. 239 L 735 mL c. 460 L 62 mL
2. a. 60 L 950 mL b. 51 L 299 mL c. 97 L 820 mL d. 25 L 521 mL
3. a. 43 L 967 mL b. 45 L 216 mL c. 199 L 920 mL

4. a. 71 L 20 mL b. 4 L 12 mL c. 18 L 670 mL d. 1 L 922 mL 2. 32 sq. cm
5. 1 L 501 mL 6. 251 L 700 mL Chapter 11: Time
Learning Logs Warm Up
1
1. , 50, 75 2. 10 S. Train Arrival Time Departure Time
4
3. a. 24 m 55 cm b. 26005 mL c. 5 km 377 m d. 40025 g No. Number Clock Time Clock Time
e. 2 g 8 mg f. 3 kg 141 g g. 14 L 339 mL h. 15040 mg
4. a. 264 kg 168 g b. 124 m 61 cm
c. 4 kg 252 g 929 mg d. 51 L 538 mL 1. 12271 7:30 8:30
5. a. 6 kg 791 g b. 12 L 617 mL c. 74 cm 6 mm d. 45 L 977 mL
e. 1 kg 597 g 995 mg f. 15 km 688 m

6. Amit: 172 cm, Rajat: 170 cm 4 mm, Sujoy: 168 cm, Mayank: 174 cm 6 mm
Sujoy < Rajat < Amit < Mayank 2. 22423 10:10 11:10
7. 31 L 392 mL 8. 145 kg 670 g
Mental Maths
1. a 2. b 3. a 4. c 5. b
Chapter 10: Perimeter and Area 3. 12446 6:50 7:50
Warm Up
1. 6 cm + 10 cm + 6 cm + 10 cm = 32 cm
2. 12 cm + 8 cm + 12 cm + 8 cm = 40 cm
3. 72 cm 4. 12259 25 minutes 25 minutes
Exercise 10A past 11 past 12
1. a. 24 cm b. 28 cm c. 32 cm d. 24 cm e. 26 cm f. 24 cm
2. a. 18 cm b. 24 cm c. 16 cm Exercise 11A
3. a. 80 cm b. 20 m c. 80 cm d. 180 cm 1. a. → iv b. → v c. → ii d. → i e. → vi f. → iii
e. 32 cm f. 40 cm 2. b. 9:13 c. 5:18 d. 2:50
4. AD = 12 cm, AB = CD = 5 cm 13 minutes past 9 18 minutes past 5 50 minutes past 2
5. Each side of pool = 25 m 47 minutes to 10 42 minutes to 6 10 minutes to 3

226 Mathematics 4