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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 564 · 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.Round 94661 to the nearest thousand.
  2. 2.What is 120% of 530?
  3. 3.What percent of 400 is 256?
  4. 4.10% of a number is 9. What is the number?
  5. 5.A car goes 143 km on 11 litres of petrol. How far can it go on 20 litres (in km)?
  6. 6.The HCF of two numbers is 9 and their LCM is 378. One of the numbers is 63. What is the other number?
  7. 7.3/9 × 1/2 =
  8. 8.3/8 of 32 + 5 × 4 =
  9. 9.What is the smallest number you must add to 835 so that it divides exactly by 12?
  10. 10.Find the HCF of 52 and 117.
  11. 11.A car goes 84 km on 4 litres of petrol. How far can it go on 7 litres (in km)?
  12. 12.6.2 × 2 =
  13. 13.15 + 5 × 4 − 8 =
  14. 14.The HCF of two numbers is 5 and their LCM is 90. One of the numbers is 10. What is the other number?
  15. 15.Find the third proportional to 5 and 25 (that is, 5 : 25 = 25 : ?).
  16. 16.What percent of 40 is 2?
  17. 17.Find the HCF of 12 and 27.
  18. 18.Pooja scored 28 marks out of 80 in a test. What percentage did Pooja score?
  19. 19.7 × (29 − 14) + 28 ÷ 4 =
  20. 20.The ratio of boys to girls in a class is 9 : 1. There are 18 boys. How many girls are there?
  21. 21.Find the LCM of 14, 3 and 5.
  22. 22.9 × (11 − 4) + 10 ÷ 2 =
  23. 23.What is the smallest number you must add to 593 so that it divides exactly by 12?
  24. 24.Find the HCF of 91 and 52.
  25. 25.Find the HCF of 35 and 15.
  26. 26.Three temple bells ring every 5, 9 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  27. 27.What is the smallest number you must add to 730 so that it divides exactly by 3?
  28. 28.3/4 − 1/9 =
  29. 29.Which is closest to 397 × 31? (Round each number first.) (a) 12000 (b) 1200 (c) 120000 (d) 24000
  30. 30.Find the smallest number bigger than 15 that leaves a remainder of 7 when divided by 12, 15 or 9.
  31. 31.What is the smallest number you must take away from 590 so that it divides exactly by 9?
  32. 32.45 + 5 × 3 − 5 =
  33. 33.Find the third proportional to 3 and 15 (that is, 3 : 15 = 15 : ?).
  34. 34.39 + 11 × 2 − 5 =
  35. 35.20.5 ÷ 5 =
  36. 36.Rohan takes 72 seconds and Diya takes 60 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?
  37. 37.Find the LCM of 7, 8 and 3.
  38. 38.Find the HCF of 117 and 91.
  39. 39.Which of these numbers divides exactly by 8? (a) 8702 (b) 1272 (c) 7988 (d) 1678
  40. 40.Farhan takes 45 seconds and Dev takes 75 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?

Answer key

  1. 95000
  2. 636
  3. 64
  4. 90
  5. 260
  6. 54
  7. 1/6
  8. 32
  9. 5
  10. 13
  11. 147
  12. 12.4
  13. 27
  14. 45
  15. 125
  16. 5
  17. 3
  18. 35
  19. 112
  20. 2
  21. 210
  22. 68
  23. 7
  24. 13
  25. 5
  26. 90
  27. 2
  28. 23/36
  29. 12000
  30. 187
  31. 5
  32. 55
  33. 75
  34. 56
  35. 4.1
  36. 360
  37. 168
  38. 13
  39. 1272
  40. 225

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