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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 396 · 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.(7 + 19) × 3 − 6 =
  2. 2.Find the HCF of 105 and 75.
  3. 3.6 painters can paint a school in 20 days. How many days would 8 painters take, working at the same speed?
  4. 4.4 painters can paint a school in 19 days. How many days would 2 painters take, working at the same speed?
  5. 5.What is the smallest number you must take away from 322 so that it divides exactly by 4?
  6. 6.6.45 + 5.4 =
  7. 7.A car goes 85 km on 5 litres of petrol. How far can it go on 17 litres (in km)?
  8. 8.Find the LCM of 14 and 18.
  9. 9.How many factors does 79 have?
  10. 10.Round 6154 to the nearest ten.
  11. 11.Which is closest to 601 ÷ 21? (a) 60 (b) 300 (c) 15 (d) 30
  12. 12.A hall floor is 360 cm long and 315 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  13. 13.If 3 cricket balls cost ₹84, how much do 6 cricket balls cost (in ₹)?
  14. 14.Round 57.71 to one decimal place. =
  15. 15.Find the HCF of 135 and 75.
  16. 16.4/10 + 5/9 =
  17. 17.Which is closest to 797 × 90? (Round each number first.) (a) 144000 (b) 7200 (c) 72000 (d) 720000
  18. 18.What percent of 250 is 185?
  19. 19.What percent of 25 is 24?
  20. 20.9.97 + 3.7 =
  21. 21.2.8 × 6 =
  22. 22.5/6 of 66 + 5 × 2 =
  23. 23.A hall floor is 350 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  24. 24.14 ÷ 5 =
  25. 25.12 : 9 = 72 : ?
  26. 26.What is 15% of 100?
  27. 27.Diya takes 75 seconds and Zoya takes 40 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?
  28. 28.Three temple bells ring every 8, 10 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  29. 29.Find the HCF of 12 and 27.
  30. 30.Which is closest to 392 ÷ 21? (a) 10 (b) 40 (c) 20 (d) 200
  31. 31.Find the LCM of 30 and 48.
  32. 32.Round 55.59 to one decimal place. =
  33. 33.If 2 kites cost ₹30, how much do 5 kites cost (in ₹)?
  34. 34.Find the third proportional to 3 and 15 (that is, 3 : 15 = 15 : ?).
  35. 35.Which is closest to 2006 ÷ 49? (a) 40 (b) 20 (c) 80 (d) 400
  36. 36.9 × (12 − 6) + 9 ÷ 3 =
  37. 37.Which of these numbers divides exactly by 8? (a) 1340 (b) 7799 (c) 6556 (d) 5856
  38. 38.A hall floor is 160 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  39. 39.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 9, 12 or 4.
  40. 40.If 2 kg of rice costs ₹166, how many kg can you buy for ₹498?

Answer key

  1. 72
  2. 15
  3. 15
  4. 38
  5. 2
  6. 11.85
  7. 289
  8. 126
  9. 2
  10. 6150
  11. 30
  12. 56
  13. 168
  14. 57.7
  15. 15
  16. 43/45
  17. 72000
  18. 74
  19. 96
  20. 13.67
  21. 16.8
  22. 65
  23. 21
  24. 2.8
  25. 54
  26. 15
  27. 600
  28. 120
  29. 3
  30. 20
  31. 240
  32. 55.6
  33. 75
  34. 75
  35. 40
  36. 57
  37. 5856
  38. 24
  39. 37
  40. 6

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