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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 506 · 40 questions
TalentJR

The method (Spot the type): Read the question and name the topic: HCF/LCM, fraction, ratio, percent … Use that lesson’s method and write each step. Check: is the answer sensible in size and units?

NameDateTime takenScore ___ / 40
  1. 1.Three temple bells ring every 12, 5 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  2. 2.What is the smallest number you must take away from 369 so that it divides exactly by 12?
  3. 3.Which of these numbers divides exactly by 6? (a) 3976 (b) 3554 (c) 8196 (d) 1513
  4. 4.A car goes 60 km on 5 litres of petrol. How far can it go on 26 litres (in km)?
  5. 5.How many factors does 73 have?
  6. 6.The HCF of two numbers is 6 and their LCM is 120. One of the numbers is 30. What is the other number?
  7. 7.If 9 kg of rice costs ₹792, how many kg can you buy for ₹264?
  8. 8.42 − 27 ÷ 9 × 4 =
  9. 9.Which is closest to 800 ÷ 19? (a) 20 (b) 400 (c) 40 (d) 80
  10. 10.Round 87.28 to one decimal place. =
  11. 11.What is the smallest number you must add to 953 so that it divides exactly by 7?
  12. 12.Two tanks hold 50 litres and 20 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  13. 13.What is 5/9 of ₹126?
  14. 14.Find the third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
  15. 15.What is 25% of 108?
  16. 16.Find the HCF of 21 and 12.
  17. 17.3/4 + 1/3 =
  18. 18.Find the third proportional to 8 and 16 (that is, 8 : 16 = 16 : ?).
  19. 19.A hall floor is 140 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  20. 20.15% of a number is 39. What is the number?
  21. 21.7.25 + 6.3 =
  22. 22.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 15, 3 or 12.
  23. 23.60% of a number is 120. What is the number?
  24. 24.Two tanks hold 60 litres and 75 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  25. 25.14.8 ÷ 2 =
  26. 26.Find the HCF of 35 and 25.
  27. 27.56 − 14 ÷ 2 × 7 =
  28. 28.What is the smallest number you must add to 799 so that it divides exactly by 4?
  29. 29.Find the LCM of 7, 6 and 2.
  30. 30.12 : 13 = 24 : ?
  31. 31.Which of these numbers divides exactly by 11? (a) 6118 (b) 2627 (c) 7601 (d) 3453
  32. 32.A hostel has enough food for 4 students for 22 days. How many days will the same food last for 22 students?
  33. 33.9.9 × 6 =
  34. 34.Divide ₹77 between Farhan and Sneha in the ratio 2 : 9. How much does Farhan get (in ₹)?
  35. 35.What is 30% of 10?
  36. 36.Find the LCM of 7, 8 and 2.
  37. 37.What is the smallest number you must add to 439 so that it divides exactly by 6?
  38. 38.Round 34.76 to one decimal place. =
  39. 39.19 + 2 × 5 − 2 =
  40. 40.Write 3/4 as a percent.

Answer key

  1. 120
  2. 9
  3. 8196
  4. 312
  5. 2
  6. 24
  7. 3
  8. 30
  9. 40
  10. 87.3
  11. 6
  12. 10
  13. 70
  14. 32
  15. 27
  16. 3
  17. 13/12
  18. 32
  19. 21
  20. 260
  21. 13.55
  22. 61
  23. 200
  24. 15
  25. 7.4
  26. 5
  27. 7
  28. 1
  29. 42
  30. 26
  31. 7601
  32. 4
  33. 59.4
  34. 14
  35. 3
  36. 56
  37. 5
  38. 34.8
  39. 27
  40. 75

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