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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 490 · 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.Write 1/2 as a percent.
  2. 2.The ratio of boys to girls in a class is 6 : 7. There are 54 boys. How many girls are there?
  3. 3.A car goes 20 km on 2 litres of petrol. How far can it go on 8 litres (in km)?
  4. 4.Three temple bells ring every 12, 30 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  5. 5.Find the LCM of 27 and 12.
  6. 6.Write 3/5 as a percent.
  7. 7.A car goes 165 km on 11 litres of petrol. How far can it go on 19 litres (in km)?
  8. 8.Which is closest to 495 + 200 + 402? (a) 1200 (b) 1100 (c) 1000 (d) 1300
  9. 9.5.99 + 8.2 =
  10. 10.Three temple bells ring every 10, 24 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  11. 11.Find the LCM of 6 and 5.
  12. 12.Find the LCM of 6, 3 and 4.
  13. 13.6.4 ÷ 4 =
  14. 14.The HCF of two numbers is 6 and their LCM is 210. One of the numbers is 42. What is the other number?
  15. 15.The HCF of two numbers is 9 and their LCM is 648. One of the numbers is 72. What is the other number?
  16. 16.40% of a number is 90. What is the number?
  17. 17.2 × (17 − 15) + 33 ÷ 3 =
  18. 18.How many factors does 27 have?
  19. 19.A hall floor is 200 cm long and 175 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  20. 20.Which is closest to 498 × 40? (Round each number first.) (a) 40000 (b) 2000 (c) 20000 (d) 200000
  21. 21.Find the LCM of 4, 14 and 10.
  22. 22.2/9 of 108 + 3 × 3 =
  23. 23.If 4 kg of rice costs ₹248, how many kg can you buy for ₹124?
  24. 24.7.83 + 6.8 =
  25. 25.A hostel has enough food for 2 students for 20 days. How many days will the same food last for 4 students?
  26. 26.43 − 15 ÷ 5 × 2 =
  27. 27.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 15, 4 or 12.
  28. 28.Round 38.87 to one decimal place. =
  29. 29.Write 1/5 as a percent.
  30. 30.What is 1/7 of 196 km?
  31. 31.A hostel has enough food for 2 students for 16 days. How many days will the same food last for 16 students?
  32. 32.A car goes 80 km on 4 litres of petrol. How far can it go on 24 litres (in km)?
  33. 33.50% of a number is 14. What is the number?
  34. 34.Find the third proportional to 7 and 14 (that is, 7 : 14 = 14 : ?).
  35. 35.Divide ₹77 between Pooja and Zoya in the ratio 5 : 2. How much does Pooja get (in ₹)?
  36. 36.What is the smallest number you must add to 790 so that it divides exactly by 7?
  37. 37.36 ÷ 4 × 7 + 20 =
  38. 38.Which is closest to 496 × 68? (Round each number first.) (a) 350000 (b) 3500 (c) 70000 (d) 35000
  39. 39.How many factors does 38 have?
  40. 40.6 painters can paint a school in 7 days. How many days would 2 painters take, working at the same speed?

Answer key

  1. 50
  2. 63
  3. 80
  4. 60
  5. 108
  6. 60
  7. 285
  8. 1100
  9. 14.19
  10. 120
  11. 30
  12. 12
  13. 1.6
  14. 30
  15. 81
  16. 225
  17. 15
  18. 4
  19. 56
  20. 20000
  21. 140
  22. 33
  23. 2
  24. 14.63
  25. 10
  26. 37
  27. 62
  28. 38.9
  29. 20
  30. 28
  31. 2
  32. 480
  33. 28
  34. 28
  35. 55
  36. 1
  37. 83
  38. 35000
  39. 4
  40. 21

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