Page 142 - Start Up Mathematics_5

2. Subtract.

(a) 5 h 52 min 38 s from 9 h 30 min 15 s (b) ` 2,945.98 from ` 6,054.31
3. Multiply.

(a) 6 h 35 min by 13 (b) ` 826.39 by 94 (c) 15 h 8 min by 23

4. Divide.
(a) ` 3,016.44 by 84 (b) ` 10,059.85 by 215 (c) ` 26,231.45 by 36

5. Honey buys 5 scarves each costing ` 175, 3 pairs of jeans each costing ` 525 and 4
T-shirts each costing ` 225. Prepare a bill for her purchases. If she had ` 5,000 with
her, how much money is she left with?
6. Neha started reading a book at half past eleven. She took 4 h 40 min to complete the
book. What was the time when she finished reading her book?

7. Convert.

(a) 92°C to °F (b) 83°C to °F (c) 197°F to °C (d) 138°F to °C
8. The maximum temperature on Monday was 38°C and on Thursday it was 5°C higher
than Monday. What was the maximum temperature on Thursday?

9. The minimum temperature on Saturday was 18°C and it dropped by 7°C on Sunday.
What was the minimum temperature on Sunday?
10. Choose the correct answer.

(a) 6 h 15 min = ___________ s
(i) 12600 (ii) 2250 (iii) 22500 (iv) 25000
(b) ` 78.23 × 6 = ` ___________

(i) ` 46.938 (ii) ` 469.38 (iii) ` 4,693.80 (iv) ` 463.98
(c) 87°C = ___________ °F

(i) 145.6°F (ii) 155.8°F (iii) 146.5°F (iv) 188.6°F

VALUES AND LIFE SKILLS

On a hot summer day when temperature was 42°C, Sanha went out at 11:00 a.m. for shopping.
She bought a top for ` 700, a game for ` 350 and a purse for ` 500. She spent two hours in
shopping and reached home at 3:00 p.m.
(a) For how many hours was Sanha outside?

(b) How much money did she spend?
What all precautions should you take while going out on a hot summer day?

134