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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 283 · 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.If 9 cricket balls cost ₹396, how much do 19 cricket balls cost (in ₹)?
  2. 2.Find the HCF of 18 and 45.
  3. 3.92 − 63 ÷ 9 × 8 =
  4. 4.What is the smallest number you must add to 111 so that it divides exactly by 12?
  5. 5.Round 96.67 to one decimal place. =
  6. 6.8.77 + 6.5 =
  7. 7.Find the LCM of 32 and 12.
  8. 8.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 12, 15 or 9.
  9. 9.39 + 8 × 3 − 5 =
  10. 10.Which is closest to 503 × 59? (Round each number first.) (a) 300000 (b) 3000 (c) 30000 (d) 60000
  11. 11.A car goes 152 km on 8 litres of petrol. How far can it go on 39 litres (in km)?
  12. 12.Find the LCM of 21 and 15.
  13. 13.Which of these numbers divides exactly by 9? (a) 2280 (b) 8829 (c) 7199 (d) 8007
  14. 14.Find the HCF of 28 and 24.
  15. 15.A hostel has enough food for 3 students for 27 days. How many days will the same food last for 9 students?
  16. 16.Which of these numbers divides exactly by 6? (a) 2800 (b) 2397 (c) 8100 (d) 1435
  17. 17.9 painters can paint a school in 12 days. How many days would 3 painters take, working at the same speed?
  18. 18.A car goes 108 km on 12 litres of petrol. How far can it go on 40 litres (in km)?
  19. 19.Round 14327 to the nearest thousand.
  20. 20.10 + 5 × 4 − 1 =
  21. 21.Round 81366 to the nearest ten.
  22. 22.80% of a number is 136. What is the number?
  23. 23.What is 4/5 of 70 litres?
  24. 24.Divide ₹420 between Nisha and Isha in the ratio 6 : 1. How much does Isha get (in ₹)?
  25. 25.Find the HCF of 81 and 36.
  26. 26.Which is closest to 595 + 295 + 504? (a) 1600 (b) 1500 (c) 1400 (d) 1300
  27. 27.Find the LCM of 4 and 18.
  28. 28.How many factors does 62 have?
  29. 29.Round 58.33 to one decimal place. =
  30. 30.Find the smallest number bigger than 15 that leaves a remainder of 3 when divided by 15, 4 or 6.
  31. 31.How many factors does 64 have?
  32. 32.Zoya takes 60 seconds and Tara 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?
  33. 33.What percent of 80 is 8?
  34. 34.Divide ₹129 between Zoya and Saanvi in the ratio 2 : 1. How much does Zoya get (in ₹)?
  35. 35.If 5 notebooks cost ₹160, how much do 9 notebooks cost (in ₹)?
  36. 36.Find the third proportional to 8 and 32 (that is, 8 : 32 = 32 : ?).
  37. 37.Write 1/2 as a percent.
  38. 38.Find the LCM of 40 and 25.
  39. 39.Three temple bells ring every 20, 5 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  40. 40.What is 75% of 572?

Answer key

  1. 836
  2. 9
  3. 36
  4. 9
  5. 96.7
  6. 15.27
  7. 96
  8. 182
  9. 58
  10. 30000
  11. 741
  12. 105
  13. 8829
  14. 4
  15. 9
  16. 8100
  17. 36
  18. 360
  19. 14000
  20. 29
  21. 81370
  22. 170
  23. 56
  24. 60
  25. 9
  26. 1400
  27. 36
  28. 4
  29. 58.3
  30. 63
  31. 7
  32. 240
  33. 10
  34. 86
  35. 288
  36. 128
  37. 50
  38. 200
  39. 60
  40. 429

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