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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 405 · 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.The HCF of two numbers is 6 and their LCM is 60. One of the numbers is 12. What is the other number?
  2. 2.What is 120% of 70?
  3. 3.Which of these numbers divides exactly by 3? (a) 3501 (b) 1631 (c) 6031 (d) 8191
  4. 4.Round 59.64 to one decimal place. =
  5. 5.The ratio of boys to girls in a class is 8 : 7. There are 72 boys. How many girls are there?
  6. 6.42 − 30 ÷ 5 × 2 =
  7. 7.20 ÷ 4 × 7 + 22 =
  8. 8.Rohan takes 54 seconds and Rahul takes 30 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?
  9. 9.If 6 mangoes cost ₹342, how much do 12 mangoes cost (in ₹)?
  10. 10.What percent of 200 is 136?
  11. 11.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 15, 12 or 6.
  12. 12.Three temple bells ring every 8, 12 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  13. 13.If 4 mangoes cost ₹152, how much do 14 mangoes cost (in ₹)?
  14. 14.How many factors does 14 have?
  15. 15.36 + 7 × 4 − 6 =
  16. 16.What is 1/4 of 36 students?
  17. 17.The ratio of boys to girls in a class is 4 : 7. There are 32 boys. How many girls are there?
  18. 18.Ishaan takes 90 seconds and Isha 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?
  19. 19.Find the smallest number bigger than 12 that leaves a remainder of 4 when divided by 12, 10 or 6.
  20. 20.Write 1/2 as a percent.
  21. 21.The ratio of boys to girls in a class is 9 : 2. There are 27 boys. How many girls are there?
  22. 22.7.01 + 7.6 =
  23. 23.1.51 + 2.1 =
  24. 24.Three temple bells ring every 5, 10 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  25. 25.A car goes 75 km on 3 litres of petrol. How far can it go on 38 litres (in km)?
  26. 26.Find the HCF of 18 and 24.
  27. 27.Find the HCF of 99 and 22.
  28. 28.What is the smallest number you must take away from 305 so that it divides exactly by 12?
  29. 29.Find the HCF of 48 and 18.
  30. 30.Which of these numbers divides exactly by 6? (a) 9272 (b) 5731 (c) 9974 (d) 1086
  31. 31.Two tanks hold 40 litres and 45 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  32. 32.Three temple bells ring every 15, 4 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  33. 33.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 10, 9 or 15.
  34. 34.25.2 ÷ 7 =
  35. 35.46 − 16 ÷ 8 × 8 =
  36. 36.9 : 3 = 27 : ?
  37. 37.Kabir takes 72 seconds and Rohan takes 48 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?
  38. 38.What is 15% of 80?
  39. 39.(3 + 10) × 4 − 4 =
  40. 40.16 ÷ 4 × 8 + 28 =

Answer key

  1. 30
  2. 84
  3. 3501
  4. 59.6
  5. 63
  6. 30
  7. 57
  8. 270
  9. 684
  10. 68
  11. 62
  12. 120
  13. 532
  14. 4
  15. 58
  16. 9
  17. 56
  18. 180
  19. 64
  20. 50
  21. 6
  22. 14.61
  23. 3.61
  24. 20
  25. 950
  26. 6
  27. 11
  28. 5
  29. 6
  30. 1086
  31. 5
  32. 60
  33. 92
  34. 3.6
  35. 30
  36. 9
  37. 144
  38. 12
  39. 48
  40. 60

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