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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 313 · 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.What percent of 20 is 19?
  2. 2.Find the LCM of 5 and 6.
  3. 3.Which is closest to 202 × 18? (Round each number first.) (a) 8000 (b) 400 (c) 4000 (d) 40000
  4. 4.Which of these numbers divides exactly by 11? (a) 6184 (b) 2740 (c) 4422 (d) 4700
  5. 5.Three temple bells ring every 6, 5 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  6. 6.A hostel has enough food for 11 students for 18 days. How many days will the same food last for 9 students?
  7. 7.8 painters can paint a school in 26 days. How many days would 16 painters take, working at the same speed?
  8. 8.A car goes 147 km on 7 litres of petrol. How far can it go on 2 litres (in km)?
  9. 9.10/11 + 1/2 =
  10. 10.The HCF of two numbers is 5 and their LCM is 225. One of the numbers is 45. What is the other number?
  11. 11.Find the LCM of 16 and 12.
  12. 12.Which of these numbers divides exactly by 3? (a) 7561 (b) 6947 (c) 6924 (d) 4795
  13. 13.Find the third proportional to 3 and 9 (that is, 3 : 9 = 9 : ?).
  14. 14.Farhan takes 36 seconds and Tara takes 90 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?
  15. 15.How many factors does 82 have?
  16. 16.How many factors does 23 have?
  17. 17.How many factors does 89 have?
  18. 18.What percent of 250 is 215?
  19. 19.What is the smallest number you must add to 943 so that it divides exactly by 11?
  20. 20.How many factors does 99 have?
  21. 21.Round 26.61 to one decimal place. =
  22. 22.4/8 − 2/10 =
  23. 23.9 × (10 − 6) + 12 ÷ 2 =
  24. 24.What is the smallest number you must add to 921 so that it divides exactly by 9?
  25. 25.What is the smallest number you must add to 989 so that it divides exactly by 7?
  26. 26.3.37 + 2.5 =
  27. 27.The ratio of boys to girls in a class is 2 : 1. There are 4 boys. How many girls are there?
  28. 28.Find the LCM of 35 and 30.
  29. 29.What is 2/7 of 112 students?
  30. 30.2.5 × 5 =
  31. 31.10 painters can paint a school in 29 days. How many days would 5 painters take, working at the same speed?
  32. 32.(11 + 4) × 5 − 18 =
  33. 33.What is 3/4 of 40 litres?
  34. 34.25% of a number is 130. What is the number?
  35. 35.Find the LCM of 21 and 6.
  36. 36.Round 76.49 to one decimal place. =
  37. 37.4 × (11 − 10) + 88 ÷ 8 =
  38. 38.1/6 × 5/11 =
  39. 39.47 + 10 × 3 − 26 =
  40. 40.81 ÷ 9 × 6 + 12 =

Answer key

  1. 95
  2. 30
  3. 4000
  4. 4422
  5. 120
  6. 22
  7. 13
  8. 42
  9. 31/22
  10. 25
  11. 48
  12. 6924
  13. 27
  14. 180
  15. 4
  16. 2
  17. 2
  18. 86
  19. 3
  20. 6
  21. 26.6
  22. 3/10
  23. 42
  24. 6
  25. 5
  26. 5.87
  27. 2
  28. 210
  29. 32
  30. 12.5
  31. 58
  32. 57
  33. 30
  34. 520
  35. 42
  36. 76.5
  37. 15
  38. 5/66
  39. 51
  40. 66

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