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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 728 · 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 is the smallest number you must take away from 134 so that it divides exactly by 13?
  2. 2.Three temple bells ring every 20, 6 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  3. 3.Find the third proportional to 5 and 20 (that is, 5 : 20 = 20 : ?).
  4. 4.5/7 × 3/4 =
  5. 5.What is 2/9 of 108 km?
  6. 6.If 6 pens cost ₹42, how much do 8 pens cost (in ₹)?
  7. 7.24 ÷ 8 × 3 + 24 =
  8. 8.If 6 kg of rice costs ₹246, how many kg can you buy for ₹492?
  9. 9.If 6 kg of rice costs ₹168, how many kg can you buy for ₹56?
  10. 10.Divide ₹286 between Kavya and Zoya in the ratio 7 : 4. How much does Zoya get (in ₹)?
  11. 11.(7 + 3) × 3 − 26 =
  12. 12.What is 3/4 of ₹68?
  13. 13.10 : 5 = 70 : ?
  14. 14.8 ÷ 4 × 9 + 13 =
  15. 15.1/4 of 12 + 8 × 7 =
  16. 16.If 8 kg of rice costs ₹480, how many kg can you buy for ₹180?
  17. 17.Two tanks hold 150 litres and 180 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  18. 18.Find the LCM of 6 and 8.
  19. 19.If 5 kg of rice costs ₹255, how many kg can you buy for ₹561?
  20. 20.Two tanks hold 40 litres and 25 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  21. 21.A hall floor is 140 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  22. 22.Two tanks hold 45 litres and 30 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  23. 23.Write 1/5 as a percent.
  24. 24.Find the HCF of 33 and 55.
  25. 25.Find the LCM of 2, 7 and 9.
  26. 26.Round 71.43 to one decimal place. =
  27. 27.1/9 of 63 + 9 × 9 =
  28. 28.A hostel has enough food for 11 students for 10 days. How many days will the same food last for 2 students?
  29. 29.Divide ₹111 between Ananya and Priya in the ratio 1 : 2. How much does Ananya get (in ₹)?
  30. 30.If 12 mangoes cost ₹144, how much do 9 mangoes cost (in ₹)?
  31. 31.Two tanks hold 100 litres and 150 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  32. 32.Which is closest to 301 × 68? (Round each number first.) (a) 2100 (b) 21000 (c) 210000 (d) 42000
  33. 33.Manav takes 80 seconds and Pooja takes 36 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?
  34. 34.What is 5% of 20?
  35. 35.If 9 kg of rice costs ₹648, how many kg can you buy for ₹792?
  36. 36.25% of a number is 127. What is the number?
  37. 37.8 : 14 = 56 : ?
  38. 38.If 8 notebooks cost ₹424, how much do 4 notebooks cost (in ₹)?
  39. 39.1/9 of 27 + 3 × 2 =
  40. 40.37 − 10 ÷ 5 × 5 =

Answer key

  1. 4
  2. 60
  3. 80
  4. 15/28
  5. 24
  6. 56
  7. 33
  8. 12
  9. 2
  10. 104
  11. 4
  12. 51
  13. 35
  14. 31
  15. 59
  16. 3
  17. 30
  18. 24
  19. 11
  20. 5
  21. 21
  22. 15
  23. 20
  24. 11
  25. 126
  26. 71.4
  27. 88
  28. 55
  29. 37
  30. 108
  31. 50
  32. 21000
  33. 720
  34. 1
  35. 11
  36. 508
  37. 98
  38. 212
  39. 9
  40. 27

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