Math

1. S.No Topics No. of question Level
1. Simplification /
approximation
10 Easy
2. No. series 5 Easy
3. Data Interpretation 10 Moderate
4. Miscellaneous
Time & work , P & L
, SI & CI , Speed
time & distance ,
ratio and its
applications ,
mensuration,
probability etc.
15 Easy to Moderate
Total 40 ( 40 marks )
45 minute
Easy to Moderate
IBPS RRB PO (Pre) 2017

2. Approximate Multiplication

3. Find the approximate value which will come in place of
question mark (?) in the following question?
Answer:- 3

4. Find the approximate value which will come in place of
question mark (?) in the following question?
Ans:-2

5. Find the approximate value which will come in place of question mark (?)
in the following question?
1. 230
2. 225
3. 235
4. 220
5. 250
𝟑𝟑
𝟏
𝟑
% 𝒐𝒇 𝟕𝟔𝟖. 𝟗 + 𝟐𝟓% 𝒐𝒇 𝟏𝟔𝟏. 𝟐 − 𝟓𝟖. 𝟏𝟐 =?

6. Find the approximate value which will come in place of
question mark (?) in the following question?
Ans -2

7. Find the approximate value which will come in place of
question mark (?) in the following question?
Ans-3

8. Find the approximate value which will come in place of
question mark (?) in the following question?
Ans-5

9. Find the approximate value which will come in place of
question mark (?) in the following question?

10. Approximate Multiplication

11. Approximate Multiplication

12. Approximate Multiplication

13. Approximate Multiplication

14. Approximate Multiplication

15. Approximate Multiplication

16. Approximate Multiplication

17. Approximate Multiplication

18. Approximate Multiplication

19. Approximate Multiplication

20. Approximate Multiplication

21. Approximate Multiplication

22. Approximate Multiplication

23. Approximate Multiplication

24. Approximate Multiplication

25. Approximate Multiplication

26. Approximate Multiplication

27. Approximate Multiplication

28. Approximate Square root
4900 < 6000< 6400
6000 =80-
400
2×80
= 80 – 2.5= 77.5 = 78
or
6000 =70+
1100
2×70
= 70 + 7.88= 78
6000

29. Approximate Square root
2500 < 3100< 3600
3100 =60-
500
2×60
= 60 – 4.166 = 56
Or
3100 =50+
600
2×50
= 50+6= 56
𝟑𝟏𝟎𝟎

30. Find the approximate value which will come in place of question mark (?)
in the following question?
1. 6
2. 13
3. 18
4. 23
5. 36
𝟐𝟒𝟏𝟓 × 𝟔𝟓𝟓 ÷ 𝟗𝟔𝟎𝟎 =?
Sol:- 49 x 25 ÷98= 12.88= 13

31. Find the approximate value which will come in place of question mark (?)
in the following question?
1. 4
2. 3
3. 6
4. 10
5. 8
𝟗𝟎𝟎. 𝟎𝟐𝟏 − 𝟐𝟓𝟓. 𝟗𝟖𝟗
𝟐
÷ 𝟓𝟕𝟓. 𝟗𝟖𝟗 − 𝟐𝟖𝟗. 𝟎𝟎𝟔
𝟐
= ?
Sol:- (30 – 16)2÷(24 – 17)2 = 196÷49=4

32. Find the approximate value which will come in place of question mark (?)
in the following question?
1. 80
2. 85
3. 90
4. 65
5. 36
𝟑𝟏𝟎𝟎 × 𝟓𝟔𝟕 ÷ 𝟐𝟓𝟎 =?𝟐
÷ 𝟖
Sol:- 56x24 ÷ 16 =83.84 = 84~85

33. Approximate Square root
Q:- 𝟐𝟒𝟗𝟖 × 𝟔𝟐𝟔 ÷ 𝟗𝟗
1- 110 2- 90 3- 200 4- 160 5- 125
Sol:-
(50 x 25)/10= 125

34. Approximation Division
1. 80
2. 85
3. 90
4. 65
5. 36
𝟑𝟏𝟎𝟎 × 𝟓𝟔𝟕 ÷ 𝟐𝟓𝟎 =?𝟐
÷ 𝟖
Sol:- 56x24 ÷ 16 =83.84 = 84~85

35. Find the approximate value which will come in place of question mark (?)
in the following question?
1. 486
2. 464
3. 450
4. 460
5. 458
𝟗. 𝟎𝟗% 𝒐𝒇 𝟏𝟑𝟑𝟒 + 𝟏𝟒. 𝟑𝟎 % 𝒐𝒇 𝟐𝟒𝟎𝟎 = ?

36. Find the approximate value which will come in place of question mark (?)
in the following question?
1. 1010
2. -1010
3. 145
4. -145
5. 570
15.0032 + 23.982 + 6.892 – ? = 1282.998 + 578.898

37. Find the approximate value which will come in place of question mark (?)
in the following question?
1. 760
2. 800
3. 690
4. 870
5. 780
𝟑𝟒𝟎
𝟐𝟎. 𝟎𝟎𝟐
÷
𝟐𝟗. 𝟗𝟗𝟕
𝟓𝟏𝟎
×
𝟏𝟕𝟗. 𝟗𝟎𝟗
𝟓𝟗. 𝟗𝟏𝟗
=?