RS Aggarwal Solutions: Number System (Exercise 1F)

Find the estimated quotient for each of the following :
Q.1. 87/28.
Ans. 87/28
87 is estimated to the nearest ten = 90
28 is estimated to the nearest ten = 30
∴ 90/30 = 3

Q.2. 83/17.
Ans. 83/17
83 is estimated to the nearest ten = 80
17 is estimated to the nearest ten = 20
∴ 80/20 = 4

Q.3. 75/23.
Ans. 75/23
75 is estimated to the nearest ten = 80
23 is estimated to the nearest ten = 20
∴ 80/20 = 4

Q.4. 193/24.
Ans.193/24
193 is estimated to the nearest ten = 200
24 is estimated to the nearest ten = 20
∴ 200/20 = 10

Q.5. 725/23.
Ans. 725/23
725 is estimated to the nearest hundred = 700

23 is estimated to the nearest ten = 20
∴ 700/20 = 35

Q.6. 275/25.
Ans. 275/25
275 is estimated to the nearest hundred = 300
25 is estimated to the nearest ten = 30
∴ 300/30 = 10

Q.7. 633/33.
Sol. 633/33
633 is estimated to the nearest hundred = 600
33 is estimated to the nearest ten = 30
∴ 600/30 = 20

Q. 8. 729/29.
Ans. 729/29
729 is estimated to the nearest hundred = 700
29 is estimated to the nearest ten = 30
∴ 700/30 = 70/3 = 23 (approximately)

Q.9. 858/39.
Ans. 858/39
858 is estimated to the nearest hundred = 900
39 is estimated to the nearest ten = 40
∴ 900/40 = 90/4 = 23 (approximately)

Q.10. 868/38.
Ans. 868/38
868 is estimated to the nearest hundred = 900
38 is estimated to the nearest ten = 40
∴ 900/40 = 90/4 = 23 (approximately)