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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 177 · 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, 15 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  2. 2.Which of these numbers divides exactly by 6? (a) 9028 (b) 3862 (c) 7895 (d) 1398
  3. 3.If 3 kg of rice costs ₹114, how many kg can you buy for ₹570?
  4. 4.A hall floor is 135 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  5. 5.30 − 24 ÷ 4 × 3 =
  6. 6.16 + 6 × 11 − 12 =
  7. 7.Find the HCF of 48 and 30.
  8. 8.Three temple bells ring every 9, 8 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  9. 9.7.2 ÷ 6 =
  10. 10.The HCF of two numbers is 6 and their LCM is 180. One of the numbers is 36. What is the other number?
  11. 11.A hostel has enough food for 2 students for 5 days. How many days will the same food last for 5 students?
  12. 12.Write 2/5 as a percent.
  13. 13.6/8 − 1/2 =
  14. 14.Two tanks hold 90 litres and 105 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  15. 15.If 5 kg of rice costs ₹225, how many kg can you buy for ₹90?
  16. 16.Three temple bells ring every 4, 24 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  17. 17.Sneha scored 15 marks out of 25 in a test. What percentage did Sneha score?
  18. 18.Find the LCM of 14, 4 and 10.
  19. 19.2.45 + 4.6 =
  20. 20.How many factors does 90 have?
  21. 21.5.2 × 3 =
  22. 22.Meera takes 90 seconds and Aarav takes 80 seconds to run once round a track. They start together from the start line. After how many seconds will they first be at the start line together again?
  23. 23.A car goes 108 km on 6 litres of petrol. How far can it go on 2 litres (in km)?
  24. 24.7.2 × 6 =
  25. 25.What percent of 80 is 4?
  26. 26.2/6 + 4/11 =
  27. 27.Which is closest to 197 × 49? (Round each number first.) (a) 100000 (b) 20000 (c) 1000 (d) 10000
  28. 28.The HCF of two numbers is 2 and their LCM is 72. One of the numbers is 18. What is the other number?
  29. 29.Write 3/10 as a percent.
  30. 30.Find the LCM of 21 and 18.
  31. 31.Two tanks hold 100 litres and 40 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  32. 32.Pooja takes 54 seconds and Isha takes 60 seconds to run once round a track. They start together from the start line. After how many seconds will they first be at the start line together again?
  33. 33.Which is closest to 2109 ÷ 31? (a) 140 (b) 35 (c) 700 (d) 70
  34. 34.What is the smallest number you must take away from 511 so that it divides exactly by 12?
  35. 35.What is the smallest number you must take away from 159 so that it divides exactly by 6?
  36. 36.Two tanks hold 350 litres and 200 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  37. 37.What is 15% of 160?
  38. 38.7.3 × 6 =
  39. 39.How many factors does 63 have?
  40. 40.Find the third proportional to 5 and 15 (that is, 5 : 15 = 15 : ?).

Answer key

  1. 60
  2. 1398
  3. 15
  4. 6
  5. 12
  6. 70
  7. 6
  8. 72
  9. 1.2
  10. 30
  11. 2
  12. 40
  13. 1/4
  14. 15
  15. 2
  16. 120
  17. 60
  18. 140
  19. 7.05
  20. 12
  21. 15.6
  22. 720
  23. 36
  24. 43.2
  25. 5
  26. 23/33
  27. 10000
  28. 8
  29. 30
  30. 126
  31. 20
  32. 540
  33. 70
  34. 7
  35. 3
  36. 50
  37. 24
  38. 43.8
  39. 6
  40. 45

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