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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 357 · 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. 1.6/11 − 4/10 =
  2. 2.9.96 + 4.8 =
  3. 3.4 : 6 = 36 : ?
  4. 4.Find the LCM of 15 and 35.
  5. 5.What percent of 80 is 52?
  6. 6.How many factors does 55 have?
  7. 7.What is 120% of 265?
  8. 8.What is the smallest number you must take away from 603 so that it divides exactly by 13?
  9. 9.Find the LCM of 35 and 40.
  10. 10.What is 30% of 130?
  11. 11.Which is closest to 2795 ÷ 41? (a) 70 (b) 140 (c) 35 (d) 700
  12. 12.48 − 12 ÷ 4 × 3 =
  13. 13.What is the smallest number you must add to 645 so that it divides exactly by 6?
  14. 14.Find the third proportional to 8 and 40 (that is, 8 : 40 = 40 : ?).
  15. 15.Three temple bells ring every 8, 4 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  16. 16.Divide ₹264 between Kabir and Sneha in the ratio 5 : 3. How much does Kabir get (in ₹)?
  17. 17.What is 20% of 85?
  18. 18.Which of these numbers divides exactly by 9? (a) 1878 (b) 3141 (c) 5177 (d) 3711
  19. 19.10 : 7 = 70 : ?
  20. 20.A hall floor is 420 cm long and 360 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  21. 21.3/6 − 1/10 =
  22. 22.Write 2/5 as a percent.
  23. 23.Find the HCF of 20 and 16.
  24. 24.Find the third proportional to 5 and 10 (that is, 5 : 10 = 10 : ?).
  25. 25.3 painters can paint a school in 12 days. How many days would 2 painters take, working at the same speed?
  26. 26.A car goes 92 km on 4 litres of petrol. How far can it go on 28 litres (in km)?
  27. 27.8 ÷ 4 × 8 + 29 =
  28. 28.Divide ₹187 between Isha and Nisha in the ratio 9 : 8. How much does Nisha get (in ₹)?
  29. 29.Three temple bells ring every 20, 6 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  30. 30.How many factors does 47 have?
  31. 31.Three temple bells ring every 20, 24 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  32. 32.The HCF of two numbers is 8 and their LCM is 80. One of the numbers is 40. What is the other number?
  33. 33.If 4 kg of rice costs ₹336, how many kg can you buy for ₹168?
  34. 34.4 painters can paint a school in 26 days. How many days would 2 painters take, working at the same speed?
  35. 35.A car goes 18 km on 2 litres of petrol. How far can it go on 23 litres (in km)?
  36. 36.How many factors does 23 have?
  37. 37.Find the third proportional to 5 and 20 (that is, 5 : 20 = 20 : ?).
  38. 38.If 9 cricket balls cost ₹342, how much do 12 cricket balls cost (in ₹)?
  39. 39.A car goes 171 km on 9 litres of petrol. How far can it go on 7 litres (in km)?
  40. 40.Find the HCF of 105 and 60.

Answer key

  1. 8/55
  2. 14.76
  3. 54
  4. 105
  5. 65
  6. 4
  7. 318
  8. 5
  9. 280
  10. 39
  11. 70
  12. 39
  13. 3
  14. 200
  15. 72
  16. 165
  17. 17
  18. 3141
  19. 49
  20. 42
  21. 2/5
  22. 40
  23. 4
  24. 20
  25. 18
  26. 644
  27. 45
  28. 88
  29. 120
  30. 2
  31. 120
  32. 16
  33. 2
  34. 52
  35. 207
  36. 2
  37. 80
  38. 456
  39. 133
  40. 15

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