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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 522 · 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.How many factors does 78 have?
  2. 2.Which is closest to 504 × 81? (Round each number first.) (a) 40000 (b) 400000 (c) 4000 (d) 80000
  3. 3.Find the LCM of 6, 10 and 14.
  4. 4.A car goes 117 km on 9 litres of petrol. How far can it go on 6 litres (in km)?
  5. 5.16 ÷ 2 × 8 + 11 =
  6. 6.Which is closest to 296 × 19? (Round each number first.) (a) 600 (b) 12000 (c) 6000 (d) 60000
  7. 7.Find the LCM of 8 and 7.
  8. 8.3/12 × 2/3 =
  9. 9.3/12 × 3/4 =
  10. 10.Round 55.71 to one decimal place. =
  11. 11.Find the LCM of 12 and 54.
  12. 12.What is the smallest number you must take away from 197 so that it divides exactly by 11?
  13. 13.Find the LCM of 10 and 18.
  14. 14.Find the HCF of 98 and 42.
  15. 15.20.3 ÷ 7 =
  16. 16.What is 80% of 300?
  17. 17.1/4 + 3/5 =
  18. 18.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 5, 6 or 15.
  19. 19.Find the smallest number bigger than 15 that leaves a remainder of 4 when divided by 10, 15 or 5.
  20. 20.55 − 81 ÷ 9 × 2 =
  21. 21.12 painters can paint a school in 6 days. How many days would 18 painters take, working at the same speed?
  22. 22.What is the smallest number you must add to 708 so that it divides exactly by 7?
  23. 23.How many factors does 41 have?
  24. 24.35 ÷ 7 × 4 + 15 =
  25. 25.Write 1/2 as a percent.
  26. 26.If 7 notebooks cost ₹280, how much do 2 notebooks cost (in ₹)?
  27. 27.Three temple bells ring every 5, 6 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  28. 28.Round 60768 to the nearest hundred.
  29. 29.Find the HCF of 40 and 24.
  30. 30.If 6 kites cost ₹318, how much do 8 kites cost (in ₹)?
  31. 31.What is the smallest number you must add to 739 so that it divides exactly by 6?
  32. 32.Divide ₹126 between Pooja and Tara in the ratio 4 : 5. How much does Tara get (in ₹)?
  33. 33.3/5 − 2/8 =
  34. 34.A car goes 32 km on 4 litres of petrol. How far can it go on 16 litres (in km)?
  35. 35.How many factors does 86 have?
  36. 36.3.1 × 2 =
  37. 37.Find the HCF of 42 and 12.
  38. 38.4 : 13 = 28 : ?
  39. 39.Divide ₹490 between Aarav and Manav in the ratio 7 : 3. How much does Manav get (in ₹)?
  40. 40.A hostel has enough food for 10 students for 30 days. How many days will the same food last for 6 students?

Answer key

  1. 8
  2. 40000
  3. 210
  4. 78
  5. 75
  6. 6000
  7. 56
  8. 1/6
  9. 3/16
  10. 55.7
  11. 108
  12. 10
  13. 90
  14. 14
  15. 2.9
  16. 240
  17. 17/20
  18. 31
  19. 34
  20. 37
  21. 4
  22. 6
  23. 2
  24. 35
  25. 50
  26. 80
  27. 90
  28. 60800
  29. 8
  30. 424
  31. 5
  32. 70
  33. 7/20
  34. 128
  35. 4
  36. 6.2
  37. 6
  38. 91
  39. 147
  40. 50

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