Page 273 - MathGPT_V1.0_C4

E:\Working\Brother_Education\Preparatory_Stage_Maths-4_(31-10-2023)\Open_Files\Answer
\ 06-Jan-2024 Bharat Arora P-1 Reader’s Sign _______________________ Date __________

Practice Time 11B 2. 2 hours 45 minutes 3. 1 hour 30 minutes
1. A=12 sq. cm, B=4 sq. cm, C=6 sq. cm, D=16 sq. cm, E=16 sq. cm, 4. 5 hours 15 minutes 5. 6:20 p.m.
F=15 sq. cm, G=10 sq. cm Practice Time 12G
2. (a) 5 sq. units (b) 8 sq. units (c) 4 sq. units (d) 6 sq. units 1. (a) 4 May (b) 17 February (c) 30 July (d) Saturday
(e) 13 sq. units (f) 7 sq. units (e) Saturday (f) Monday
Chapter Assessment 2. (a) 6 weeks (b) 15 weeks (c) 12 years (d) 6 years
1. (a) (iii) (b) (iii) (c) (i) (d) (ii) (e) (i) (e) 3 months (f) 2 years
2. (a) 20 cm (b) 18 cm (c) 25 cm (d) 24 cm 3. (a) 97 days (b) 143 days (c) 54 days (d) 67 days
(e) 16 cm (f) 20 cm (e) 15 days (f) 230 days
3. (a) P = 12 cm; A = 8 sq. cm (b) P = 16 cm; A = 16 sq. cm 4. (a) 43 months (b) 59 months (c) 82 months (d) 88 months
(c) P = 12 cm; A = 6 sq. cm (d) P = 14 cm; A = 9 sq. cm (e) 20 months (f) 61 months
4. (a) 24 sq. cm (b) 30 sq. cm (c) 18 sq. cm 5. 97 days 6. 5th of January 7. 152 days 8. 16 August 2021
5. (a) 18 sq. cm (b) 15 sq. cm 6. 750 m 7. 44 cm Chapter Assessment
8. 88 m 9. 24 cm 1. (a)-(iii), (b)- (iv), (c)-(ii), (d)-(i), (e)-(i)
Brain Sizzlers 2. 12 minutes 26 seconds 3. 3:45 p.m. 4. 9:45 p.m.
32 cm 5. 10:30 p.m. 6. 1 hour 19 minutes 7. 6:25 p.m.
Chapter 12. Time 8. 57 days
Mental Maths
Let’s Recall
1. (a) 120 (b) 24 (c) 140 (d) 1095 Team A B C D
2. (a)-(iii), (b)-(ii), (c)-(iv), (d)-(i) Total 4 hours 4 hours 10 minutes 5 hours 34 minutes 4 hours
Practice Time 12A Time 3 seconds 29 seconds 29 seconds 2 seconds
1. (b) 12:13, 13 minutes past 12, 47 minutes to 1 Rank 2nd 3rd 4th Ist
(c) 5:30, 30 minutes past 5, 30 minutes to 6 Chapter 13. Money
(d) 2:40, 40 minutes past 2, 20 minutes to 3
(e) 7:16. 16 minutes past 7, 44 minutes to 8 Let's Recall
(f) 9:15, 15 minutes past 9, 45 minutes to 10 1. Rohan 2. Week-2 3. Siya - `233; Rohan - `342 4. Rohan
(g) 6:45, 45 minutes past 6, 15 minutes to 7 Think and Answer
(h) 11:10, 10 minutes past 11, 50 minutes to 12
Practice Time 12B `50000
1. 50 seconds 10 seconds 25 seconds Practice Time 13A
Practice Time 12C 1. (a) `218 (b) `1876 (c) `725 (d) `3005 (e) `3347
2.
4. `1185
3. Gyan
`389
1. (a) 3:20 a.m. (b) 4:28 a.m. (c) 9:37 a.m. (d) 2:29 p.m. Think and Answer
(e) 1:30 p.m. (f) 5:40 p.m. (g) 6:25 p.m. (h) 12:00 a.m.
(i) 10:22 p.m. (j) 9:38 p.m. (k) 1:48 p.m. (l) 8 p.m. `6041
2. (a) 0140 hours (b) 0457 hours (c) 0006 hours (d) 0605 hours Practice Time 13B
(e) 1024 hours (f) 1936 hours (g) 1215 hours (h) 1417 hours 1. (a) `1218.05 (b) `1121.50 (c) `9390.00
(i) 2300 hours (j) 2400 hours or 0000 hours (k) 1530 hours 2. (a) `7114.2 (b) `13458.88
(i) 2140 hours 3. (a) `398.64 (b) `503.65 (c) `139.84
3. (a) Renu wakes up at 6:45 a.m. (b) A bus leaves ISBT at 2:45 p.m. 4. (a) `1514 (b) `4232.5 (c) `3255 (d) `2009.31
(c) A hawker starts distributing newspapers at 5:35 a.m. 5. `68.65 6. Rupesh, `475.05
(d) A match starts at 5:30 p.m. (e) Golu reached Agra at 8:10 p.m. 7. `81.05 8. `698.75
4. 12-hour format: 4:30 p.m. and 24-hour format-16:30 hours Practice Time 13C
Practice Time 12D 1. (a) `592 (b) `614.08 (c) `2146.8 (d) `84975.6
1. (a) 360 minutes (b) 510 minutes (c) 18000 seconds 2. (a) `10.75 (b) `35.06 (c) `41.9 (d) `203.74
(d)1080 seconds (e) 1695 seconds (f) 53280 seconds 3. `337.5 4. `15759.75 5. `29375 6. `582609
2. (a) 3 minutes 36 seconds (b) 40 minutes 48 seconds 7. `65 8. `483.2 9. `5.8 10. `57
(c) 1 hour 4 minutes 20 seconds (d) 2 hours Practice Time 13D
Practice Time 12E 1. APNA STATIONERY
1. (a) 53 minutes 55 seconds (b) 29 minutes 38 seconds Name: ___________ Date: ___________
(c) 58 minutes 18 seconds (d) 46 minutes 5 seconds Address: ___________________ Bill No. 125
(e) 41 hours 51 minutes 30 seconds OR 1 day 17 hours 51 minutes 30
seconds S.No. Items Quantity Rate (`) Amount (`)
(f) 106 hours 5 minutes 8 seconds OR 4 days 10 hours 5 minutes 8 1. Notebooks 6 55.40 332.40
seconds 2. Files 8 25 200
2. (a) 15 hours 15 minutes (b) 14 hours 58 minutes
(c) 4 minutes 40 seconds (d) 19 hours 43 minutes 54 seconds 3. Pens 2 60.5 121.00
3. 29 hours 14 minutes OR 1 day 5 hours 14 minutes 4. Pencils 12 5.75 69
4. 95 minutes 40 seconds OR 1 hour 35 minutes 40 seconds Total = 722.4
5. Ajay, 15 minutes
Practice Time 12F Chapter Assessment
1. (a) (ii) (b) (iii) (c) (iii) (d) (i)
1. Starting time Finishing time Duration 2. NO 3. `8000 4. `800 5. `9170 7. `2355
(a) 7:25 a.m. 9:15 a.m. 1 hour 50 minutes 8. `35 9. `2556 10. 5
(b) 11:10 p.m. 12:20 a.m. 1 hour 10 minutes Mental Maths
(c) 5:45 a.m. 6:35 a.m. 50 minutes 1. 10 2. 50 3. (a) 7.50 (b) 9.75
4.
`25
5. `3
(d) 8:10 p.m. 11:35 p.m. 3 hours 25 minutes Brain Sizzlers
(e) 10:55 a.m. 12:16 p.m. 1 hour 21 minutes `6375

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