RRB NTPC - Decimals Question Bank with Options

1. What is the value of 0.00001?

A) One hundred thousandth

B) One millionth

C) One ten-thousandth

D) One thousandth

2. If a train travels 120.6 km in 1.8 hours, what is its average speed in km/hour?

A) 67

B) 67.5

C) 66

D) 68

3. What is the result of 0.1 + 0.01 + 0.001?

A) 0.111

B) 0.0111

C) 0.101001

D) 0.11

4. Which fraction is equivalent to 0.375?

A) 3/8

B) 3/7

C) 375/1000

D) 1/3

5. What is the reciprocal of 0.5?

A) 0.5

B) 2

C) 1/5

D) 0.05

6. Round 19.999 to two decimal places.

A) 19.99

B) 20.00

C) 19.999

D) 20.0

7. If one meter of cloth costs $10.50, what is the cost of 2.5 meters?

A) $25.25

B) $26.25

C) $25.00

D) $26.50

8. What is the value of 10.5 - 2.75?

A) 7.75

B) 8.75

C) 7.25

D) 8.25

9. Calculate 0.01 * 0.01.

A) 0.1

B) 0.001

C) 0.0001

D) 0.011

10. Convert 25% to a decimal.

A) 2.5

B) 0.025

C) 0.25

D) 25.0

11. What is 0.15 as a percentage?

A) 1.5%

B) 15%

C) 0.15%

D) 150%

12. Divide 50 by 0.5.

A) 25

B) 100

C) 10

D) 250

13. What is the sum of 123.45 and 67.89?

A) 190.34

B) 191.34

C) 190.24

D) 191.24

14. Which number is greater: 0.99 or 0.909?

A) 0.99

B) 0.909

C) They are equal

D) Cannot be determined

15. Express the decimal 0.0001 as a fraction.

A) 1/10

B) 1/100

C) 1/1000

D) 1/10000

16. What is the difference between 100.01 and 99.99?

A) 0.02

B) 0.2

C) 1.01

D) 0.01

17. If a shirt costs $15.99 and you pay with a $20 bill, what is your change?

A) $4.01

B) $5.01

C) $4.91

D) $5.91

18. Multiply 0.12 by 0.3.

A) 0.36

B) 0.036

C) 0.0036

D) 0.360

19. What is the result of 7.5 divided by 0.01?

A) 0.75

B) 75

C) 750

D) 0.075

20. Find the value of 0.005 + 0.05 + 0.5.

A) 0.555

B) 0.505

C) 0.055

D) 5.55

21. Convert the fraction 5/8 to a decimal.

A) 0.625

B) 0.58

C) 0.6

D) 0.0625

22. What is the place value of the digit 3 in the decimal 0.1234?

A) Hundreds

B) Tenths

C) Thousandths

D) Hundredths

23. Which decimal is equivalent to 1/8?

A) 0.125

B) 0.8

C) 0.0125

D) 0.18

24. If 2.5 liters of water are poured into 5 identical bottles, how much water is in each bottle?

A) 0.5 liters

B) 0.05 liters

C) 5 liters

D) 0.2 liters

25. What is the value of 0.007 * 1000?

A) 0.7

B) 7

C) 0.0007

D) 70

26. Subtract 0.01 from 1.0.

A) 0.9

B) 0.99

C) 1.01

D) 0.09

27. What is the sum of 1.1, 2.2, and 3.3?

A) 6.6

B) 5.5

C) 6.0

D) 6.5

28. Calculate the product of 0.5 and 0.05.

A) 0.25

B) 0.025

C) 0.0025

D) 0.55

29. What is the result of 10 divided by 0.2?

A) 5

B) 50

C) 0.5

D) 2

30. A recipe requires 0.75 kg of sugar. If you have 0.5 kg of sugar, how much more do you need?

A) 0.25 kg

B) 0.15 kg

C) 0.35 kg

D) 0.2 kg

31. If a car travels at 60.5 km per hour, how far will it travel in 3 hours?

A) 180.5 km

B) 181.5 km

C) 181 km

D) 180 km

32. Express 0.6 as a fraction in its simplest form.

A) 6/10

B) 3/5

C) 6/100

D) 1/6

33. What is the value of 1/4 as a decimal?

A) 0.14

B) 0.4

C) 0.25

D) 0.5

34. What is the value of 3/10 as a decimal?

A) 0.03

B) 0.3

C) 3.0

D) 0.003

35. Divide 1 by 0.5.

A) 0.5

B) 1.5

C) 2

D) 0.2

36. Calculate 0.1 multiplied by 0.01.

A) 0.1

B) 0.01

C) 0.001

D) 0.0001

37. What is the difference between 5.001 and 0.1?

A) 4.901

B) 4.991

C) 5.101

D) 4.91

38. What is the sum of 0.001 and 0.01?

A) 0.011

B) 0.11

C) 0.0011

D) 0.02

39. Round the decimal 23.456 to the nearest hundredth.

A) 23.4

B) 23.45

C) 23.46

D) 23.5

40. Round the decimal 15.789 to the nearest tenth.

A) 15.7

B) 15.8

C) 15.79

D) 16.0

41. Which of the following decimals is the smallest: 0.1, 0.01, 0.11, 0.101?

A) 0.1

B) 0.01

C) 0.11

D) 0.101

42. Which of the following decimals is the largest: 0.5, 0.05, 0.55, 0.505?

A) 0.5

B) 0.05

C) 0.55

D) 0.505

43. Convert the decimal 0.125 to a fraction in its simplest form.

A) 1/8

B) 1/4

C) 1/125

D) 5/10

44. What is the place value of the digit 7 in the decimal 12.3457?

A) Tenths

B) Hundredths

C) Thousandths

D) Ten Thousandths

45. Divide 15.6 by 4.

A) 3.9

B) 3.09

C) 4.0

D) 3.5

46. Multiply 2.5 by 3.4.

A) 8.5

B) 7.5

C) 8.0

D) 9.0

47. Subtract 3.14 from 10.50.

A) 7.36

B) 7.46

C) 6.36

D) 7.56

48. Add the following decimals: 12.34 + 5.67 + 0.98.

A) 18.99

B) 19.00

C) 18.98

D) 19.99

49. Which decimal represents the fraction 1/2?

A) 0.1

B) 0.05

C) 0.5

D) 0.2

50. What is the value of 0.75 expressed as a fraction in its simplest form?

A) 3/4

B) 15/20

C) 75/100

D) 3/5

Decimals - Question Bank