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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 542 · 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.Which is closest to 2797 ÷ 41? (a) 35 (b) 140 (c) 70 (d) 700
  2. 2.Vivaan scored 4 marks out of 40 in a test. What percentage did Vivaan score?
  3. 3.Find the HCF of 16 and 12.
  4. 4.Three temple bells ring every 15, 10 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  5. 5.5/6 − 1/2 =
  6. 6.Find the LCM of 54 and 24.
  7. 7.Three temple bells ring every 18, 8 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  8. 8.How many factors does 73 have?
  9. 9.2.87 + 6.1 =
  10. 10.What is the smallest number you must take away from 727 so that it divides exactly by 6?
  11. 11.Find the third proportional to 9 and 36 (that is, 9 : 36 = 36 : ?).
  12. 12.The ratio of boys to girls in a class is 7 : 2. There are 28 boys. How many girls are there?
  13. 13.How many factors does 31 have?
  14. 14.Find the LCM of 4, 6 and 11.
  15. 15.Which is closest to 603 + 599 + 697? (a) 2000 (b) 1800 (c) 2100 (d) 1900
  16. 16.What is 1/2 of 36 kg?
  17. 17.4/11 × 8/9 =
  18. 18.Zoya takes 36 seconds and Karan takes 54 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 third proportional to 9 and 45 (that is, 9 : 45 = 45 : ?).
  20. 20.7 painters can paint a school in 26 days. How many days would 13 painters take, working at the same speed?
  21. 21.A car goes 88 km on 8 litres of petrol. How far can it go on 15 litres (in km)?
  22. 22.12 : 3 = 84 : ?
  23. 23.20 + 6 × 9 − 5 =
  24. 24.12% of a number is 51. What is the number?
  25. 25.Find the third proportional to 4 and 16 (that is, 4 : 16 = 16 : ?).
  26. 26.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 10, 5 or 12.
  27. 27.If 11 notebooks cost ₹88, how much do 7 notebooks cost (in ₹)?
  28. 28.A hall floor is 240 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  29. 29.3 : 15 = 21 : ?
  30. 30.How many factors does 59 have?
  31. 31.Which is closest to 197 × 20? (Round each number first.) (a) 8000 (b) 400 (c) 4000 (d) 40000
  32. 32.Manav takes 54 seconds and Arjun 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?
  33. 33.What is 60% of 85?
  34. 34.A hostel has enough food for 4 students for 7 days. How many days will the same food last for 7 students?
  35. 35.Find the LCM of 35 and 15.
  36. 36.3.74 + 1.5 =
  37. 37.Which is closest to 295 + 501 + 901? (a) 1800 (b) 1600 (c) 1700 (d) 1900
  38. 38.Find the LCM of 21 and 24.
  39. 39.Rahul takes 45 seconds and Nisha 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?
  40. 40.A car goes 110 km on 10 litres of petrol. How far can it go on 3 litres (in km)?

Answer key

  1. 70
  2. 10
  3. 4
  4. 60
  5. 1/3
  6. 216
  7. 72
  8. 2
  9. 8.97
  10. 1
  11. 144
  12. 8
  13. 2
  14. 132
  15. 1900
  16. 18
  17. 32/99
  18. 108
  19. 225
  20. 14
  21. 165
  22. 21
  23. 69
  24. 425
  25. 64
  26. 61
  27. 56
  28. 24
  29. 105
  30. 2
  31. 4000
  32. 270
  33. 51
  34. 4
  35. 105
  36. 5.24
  37. 1700
  38. 168
  39. 225
  40. 33

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