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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 432 · 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.If 7 mangoes cost ₹322, how much do 5 mangoes cost (in ₹)?
  2. 2.What is the smallest number you must add to 244 so that it divides exactly by 3?
  3. 3.A car goes 52 km on 4 litres of petrol. How far can it go on 40 litres (in km)?
  4. 4.Divide ₹144 between Priya and Rohan in the ratio 1 : 8. How much does Rohan get (in ₹)?
  5. 5.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?
  6. 6.Which is closest to 896 + 298 + 98? (a) 1200 (b) 1500 (c) 1400 (d) 1300
  7. 7.Find the LCM of 2, 11 and 7.
  8. 8.Kavya takes 36 seconds and Priya takes 80 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.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 10, 8 or 12.
  10. 10.What is the smallest number you must add to 442 so that it divides exactly by 12?
  11. 11.What is 20% of 420?
  12. 12.15 ÷ 5 × 5 + 8 =
  13. 13.What is 1/2 of 18 km?
  14. 14.Divide ₹78 between Nisha and Farhan in the ratio 2 : 1. How much does Nisha get (in ₹)?
  15. 15.Dev takes 36 seconds and Manav 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?
  16. 16.3/4 × 4/5 =
  17. 17.33 + 7 × 10 − 1 =
  18. 18.Find the third proportional to 4 and 8 (that is, 4 : 8 = 8 : ?).
  19. 19.Find the LCM of 12, 3 and 8.
  20. 20.Find the LCM of 16 and 20.
  21. 21.Round 12.42 to one decimal place. =
  22. 22.1/5 + 2/4 =
  23. 23.Arjun scored 28 marks out of 80 in a test. What percentage did Arjun score?
  24. 24.Which is closest to 1796 ÷ 29? (a) 600 (b) 30 (c) 60 (d) 120
  25. 25.What is 6/7 of 147 km?
  26. 26.4.1 × 6 =
  27. 27.2/6 × 6/11 =
  28. 28.Three temple bells ring every 5, 15 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  29. 29.4 : 11 = 28 : ?
  30. 30.54.6 ÷ 6 =
  31. 31.4 : 10 = 20 : ?
  32. 32.Round 99.77 to one decimal place. =
  33. 33.19.2 ÷ 2 =
  34. 34.What is the smallest number you must add to 577 so that it divides exactly by 8?
  35. 35.If 8 pencil boxes cost ₹328, how much do 17 pencil boxes cost (in ₹)?
  36. 36.2 : 9 = 6 : ?
  37. 37.Two tanks hold 20 litres and 25 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  38. 38.What percent of 50 is 44?
  39. 39.1/8 of 40 + 2 × 8 =
  40. 40.Find the HCF of 56 and 70.

Answer key

  1. 230
  2. 2
  3. 520
  4. 128
  5. 24
  6. 1300
  7. 154
  8. 720
  9. 122
  10. 2
  11. 84
  12. 23
  13. 9
  14. 52
  15. 180
  16. 3/5
  17. 102
  18. 16
  19. 24
  20. 80
  21. 12.4
  22. 7/10
  23. 35
  24. 60
  25. 126
  26. 24.6
  27. 2/11
  28. 30
  29. 77
  30. 9.1
  31. 50
  32. 99.8
  33. 9.6
  34. 7
  35. 697
  36. 27
  37. 5
  38. 88
  39. 21
  40. 14

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