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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 185 · 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.Find the LCM of 15 and 24.
  2. 2.Which of these numbers divides exactly by 8? (a) 4099 (b) 8331 (c) 1272 (d) 9765
  3. 3.Find the LCM of 7, 14 and 13.
  4. 4.9 × (23 − 15) + 18 ÷ 9 =
  5. 5.The HCF of two numbers is 8 and their LCM is 120. One of the numbers is 40. What is the other number?
  6. 6.What is the smallest number you must add to 215 so that it divides exactly by 6?
  7. 7.What is the smallest number you must add to 711 so that it divides exactly by 7?
  8. 8.Which is closest to 299 × 69? (Round each number first.) (a) 2100 (b) 42000 (c) 210000 (d) 21000
  9. 9.Find the HCF of 32 and 24.
  10. 10.Three temple bells ring every 30, 5 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  11. 11.2 : 8 = 4 : ?
  12. 12.Write 11/20 as a percent.
  13. 13.How many factors does 36 have?
  14. 14.Find the LCM of 12 and 27.
  15. 15.Saanvi takes 90 seconds and Sneha takes 48 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?
  16. 16.5 : 7 = 20 : ?
  17. 17.Which is closest to 801 + 403 + 700? (a) 1800 (b) 1900 (c) 2000 (d) 2100
  18. 18.2.8 × 8 =
  19. 19.A car goes 33 km on 3 litres of petrol. How far can it go on 23 litres (in km)?
  20. 20.Divide ₹189 between Diya and Isha in the ratio 6 : 1. How much does Diya get (in ₹)?
  21. 21.What percent of 80 is 52?
  22. 22.54 ÷ 9 × 8 + 7 =
  23. 23.Divide ₹816 between Diya and Ananya in the ratio 9 : 7. How much does Ananya get (in ₹)?
  24. 24.Find the LCM of 10 and 15.
  25. 25.If 4 pens cost ₹72, how much do 15 pens cost (in ₹)?
  26. 26.Find the HCF of 72 and 84.
  27. 27.18 + 6 × 11 − 11 =
  28. 28.4/6 − 1/2 =
  29. 29.Write 33/50 as a percent.
  30. 30.Find the HCF of 26 and 117.
  31. 31.Vivaan takes 30 seconds and Kabir takes 45 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?
  32. 32.Which is closest to 501 + 305 + 197? (a) 900 (b) 1200 (c) 1100 (d) 1000
  33. 33.Find the HCF of 90 and 75.
  34. 34.6/10 + 5/7 =
  35. 35.If 10 erasers cost ₹600, how much do 9 erasers cost (in ₹)?
  36. 36.Round 90.24 to one decimal place. =
  37. 37.Find the LCM of 9, 8 and 4.
  38. 38.3.32 + 4.2 =
  39. 39.Three temple bells ring every 12, 9 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  40. 40.A car goes 72 km on 3 litres of petrol. How far can it go on 39 litres (in km)?

Answer key

  1. 120
  2. 1272
  3. 182
  4. 74
  5. 24
  6. 1
  7. 3
  8. 21000
  9. 8
  10. 120
  11. 16
  12. 55
  13. 9
  14. 108
  15. 720
  16. 28
  17. 1900
  18. 22.4
  19. 253
  20. 162
  21. 65
  22. 55
  23. 357
  24. 30
  25. 270
  26. 12
  27. 73
  28. 1/6
  29. 66
  30. 13
  31. 90
  32. 1000
  33. 15
  34. 46/35
  35. 540
  36. 90.2
  37. 72
  38. 7.52
  39. 36
  40. 936

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