RRB NTPC - Decimals Online Test (MCQ Quiz)

1. 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

2. Which decimal represents the fraction 1/2?

A) 0.1 B) 0.05 C) 0.5 D) 0.2

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

A) 18.99 B) 19.00 C) 18.98 D) 19.99

4. Subtract 3.14 from 10.50.

A) 7.36 B) 7.46 C) 6.36 D) 7.56

5. Multiply 2.5 by 3.4.

A) 8.5 B) 7.5 C) 8.0 D) 9.0

6. Divide 15.6 by 4.

A) 3.9 B) 3.09 C) 4.0 D) 3.5

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

A) Tenths B) Hundredths C) Thousandths D) Ten Thousandths

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

A) 1/8 B) 1/4 C) 1/125 D) 5/10

9. 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

10. 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

11. Round the decimal 15.789 to the nearest tenth.

A) 15.7 B) 15.8 C) 15.79 D) 16.0

12. Round the decimal 23.456 to the nearest hundredth.

A) 23.4 B) 23.45 C) 23.46 D) 23.5

13. What is the sum of 0.001 and 0.01?

A) 0.011 B) 0.11 C) 0.0011 D) 0.02

14. What is the difference between 5.001 and 0.1?

A) 4.901 B) 4.991 C) 5.101 D) 4.91

15. Calculate 0.1 multiplied by 0.01.

A) 0.1 B) 0.01 C) 0.001 D) 0.0001

16. Divide 1 by 0.5.

A) 0.5 B) 1.5 C) 2 D) 0.2

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

A) 0.03 B) 0.3 C) 3.0 D) 0.003

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

A) 0.14 B) 0.4 C) 0.25 D) 0.5

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

A) 6/10 B) 3/5 C) 6/100 D) 1/6

20. 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

21. 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

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

A) 5 B) 50 C) 0.5 D) 2

23. Calculate the product of 0.5 and 0.05.

A) 0.25 B) 0.025 C) 0.0025 D) 0.55

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

A) 6.6 B) 5.5 C) 6.0 D) 6.5

25. Subtract 0.01 from 1.0.

A) 0.9 B) 0.99 C) 1.01 D) 0.09

26. What is the value of 0.007 * 1000?

A) 0.7 B) 7 C) 0.0007 D) 70

27. 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

28. Which decimal is equivalent to 1/8?

A) 0.125 B) 0.8 C) 0.0125 D) 0.18

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

A) Hundreds B) Tenths C) Thousandths D) Hundredths

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

A) 0.625 B) 0.58 C) 0.6 D) 0.0625

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

A) 0.555 B) 0.505 C) 0.055 D) 5.55

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

A) 0.75 B) 75 C) 750 D) 0.075

33. Multiply 0.12 by 0.3.

A) 0.36 B) 0.036 C) 0.0036 D) 0.360

34. 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

35. What is the difference between 100.01 and 99.99?

A) 0.02 B) 0.2 C) 1.01 D) 0.01

36. Express the decimal 0.0001 as a fraction.

A) 1/10 B) 1/100 C) 1/1000 D) 1/10000

37. Which number is greater: 0.99 or 0.909?

A) 0.99 B) 0.909 C) They are equal D) Cannot be determined

38. What is the sum of 123.45 and 67.89?

A) 190.34 B) 191.34 C) 190.24 D) 191.24

39. Divide 50 by 0.5.

A) 25 B) 100 C) 10 D) 250

40. What is 0.15 as a percentage?

A) 1.5% B) 15% C) 0.15% D) 150%

41. Convert 25% to a decimal.

A) 2.5 B) 0.025 C) 0.25 D) 25.0

42. Calculate 0.01 * 0.01.

A) 0.1 B) 0.001 C) 0.0001 D) 0.011

43. What is the value of 10.5 - 2.75?

A) 7.75 B) 8.75 C) 7.25 D) 8.25

44. 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

45. Round 19.999 to two decimal places.

A) 19.99 B) 20.00 C) 19.999 D) 20.0

46. What is the reciprocal of 0.5?

A) 0.5 B) 2 C) 1/5 D) 0.05

47. Which fraction is equivalent to 0.375?

A) 3/8 B) 3/7 C) 375/1000 D) 1/3

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

A) 0.111 B) 0.0111 C) 0.101001 D) 0.11

49. 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

50. What is the value of 0.00001?

A) One hundred thousandth B) One millionth C) One ten-thousandth D) One thousandth

Decimals - Online Test

Test Results