1. Fill in the blanks.
(i) If Arulmozhi saves ₹ 12 per day, then she saves ₹ ________ in 30 days.
Ans: ₹ 360
(ii) If a person ‘A’ earns ₹ 1800 in 12 days, then he earns ` ________ in a day.
Ans: ₹ 150
(iii) 45 ÷ (7 + 8) − 2 = ________.
Ans: 1
2. Say True or False.
(i) 3 + 9 × 8 = 96
Ans: False
(ii) 7 × 20 − 4 = 136
Ans: True
(iii) 40 + (56 − 6) ÷ 2 = 45
Ans: False
3. The number of people who visited the Public Library for the past 5 months were 1200, 2000, 2450, 3060 and 3200 respectively. How many people visited the library in the last 5 months.
Number of people who visited the library in 5 months = 1200 + 2000 + 2450 + 3060 + 3200 = 11910
Ans: 11910
4. Cheran had a bank savings of ₹ 7,50,250. He withdrew ₹ 5,34,500 for educational purpose. Find the balance amount in his account.
| Cheran bank Savings | = 7,50,250 (-) |
| Withdrawal | = 5,34,500 |
| Balance | = 2,15,750 |
Ans: ₹ 2,15,750
5. In a cycle factory, 1560 bicycles were manufactured every day. Find the number of bicycles manufactured in 25 days.
Cycle manufactured every day = 1560
Cycle manufactured in 25 days = 1560 × 25 = 39,000 cycles
Ans: 39,000
6. ₹ 62500 was equally distributed as a New Year bonus for 25 employees of a company. How much did each receive?
Total New Year bonus = ₹ 62,500
equally distributed = 25 employees
Each employee receive = ₹ 2,500
= 62,500 / 25 = 2,500
Ans: ₹ 2,500
7. Simplify the following numerical expressions:
(i) (10 + 17) ÷ 3
= (10 + 17) ÷ 3
= 27 ÷ 3 = 9
Ans: 9
(ii) 12 − [3 − {6 − (5 − 1)}]
= 12 − [3 − {6 − (5 − 1)}] = 12 − [3 − {6 − 4}] = 12 − [3 − 2] = 12 − 1 = 11
Ans: 11
(iii) 100 + 8 ÷ 2 + {(3 × 2) − 6 ÷ 2}
= 100 + 8 ÷ 2 + {(3 × 2) − 6 ÷ 2}
= 100 + 8 ÷ 2 + {6 − 6 ÷ 2}
= 100 + 8 ÷ 2 + {6 − 3}
= 100 + 8 ÷ 2 + 3
= 100 + 4 + 3 = 107
Ans: 107
Objective Type Questions
8. The value of 3 + 5 − 7 × 1 is ________.
- 5
- 7
- 8
- 1
Ans: 1
9. The value of 24 ÷ {8 − (3 x 2)} is _________
- 0
- 12
- 3
- 4
Ans: 12
10. Use BIDMAS and put the correct operator in the box.
2 c 6 −12 ÷ (4 + 2) = 10
- +
- −
- ×
- ÷
Ans: ×