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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 788 · 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 12 pens cost ₹132, how much do 9 pens cost (in ₹)?
  2. 2.2.48 + 2.3 =
  3. 3.A hall floor is 160 cm long and 140 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  4. 4.The HCF of two numbers is 8 and their LCM is 280. One of the numbers is 40. What is the other number?
  5. 5.A hall floor is 210 cm long and 180 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  6. 6.If 5 kites cost ₹295, how much do 18 kites cost (in ₹)?
  7. 7.4 × (24 − 10) + 12 ÷ 4 =
  8. 8.8 : 2 = 24 : ?
  9. 9.If 5 kg of rice costs ₹400, how many kg can you buy for ₹720?
  10. 10.The HCF of two numbers is 8 and their LCM is 80. One of the numbers is 40. What is the other number?
  11. 11.The HCF of two numbers is 7 and their LCM is 210. One of the numbers is 35. What is the other number?
  12. 12.7 : 14 = 63 : ?
  13. 13.How many factors does 61 have?
  14. 14.Find the third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
  15. 15.Find the LCM of 3, 5 and 4.
  16. 16.Three temple bells ring every 5, 10 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  17. 17.What is the smallest number you must take away from 851 so that it divides exactly by 12?
  18. 18.Which is closest to 601 × 52? (Round each number first.) (a) 60000 (b) 300000 (c) 30000 (d) 3000
  19. 19.Which is closest to 792 ÷ 41? (a) 10 (b) 20 (c) 40 (d) 200
  20. 20.Write 11/20 as a percent.
  21. 21.Find the LCM of 15 and 20.
  22. 22.A car goes 180 km on 12 litres of petrol. How far can it go on 19 litres (in km)?
  23. 23.Find the LCM of 8 and 14.
  24. 24.Find the LCM of 3, 2 and 7.
  25. 25.Find the HCF of 32 and 28.
  26. 26.What is 50% of 130?
  27. 27.Find the third proportional to 7 and 14 (that is, 7 : 14 = 14 : ?).
  28. 28.The ratio of boys to girls in a class is 8 : 1. There are 16 boys. How many girls are there?
  29. 29.Dev scored 19 marks out of 25 in a test. What percentage did Dev score?
  30. 30.What is 1/5 of 125 students?
  31. 31.Write 22/25 as a percent.
  32. 32.Two tanks hold 315 litres and 360 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  33. 33.Find the HCF of 10 and 15.
  34. 34.A hall floor is 350 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  35. 35.Find the LCM of 5, 6 and 4.
  36. 36.Ananya takes 45 seconds and Sneha 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.Which is closest to 603 + 500 + 204? (a) 1400 (b) 1500 (c) 1300 (d) 1200
  38. 38.A hostel has enough food for 4 students for 22 days. How many days will the same food last for 22 students?
  39. 39.Divide ₹495 between Diya and Manav in the ratio 2 : 9. How much does Diya get (in ₹)?
  40. 40.What is the smallest number you must take away from 395 so that it divides exactly by 6?

Answer key

  1. 99
  2. 4.78
  3. 56
  4. 56
  5. 42
  6. 1062
  7. 59
  8. 6
  9. 9
  10. 16
  11. 42
  12. 126
  13. 2
  14. 32
  15. 60
  16. 90
  17. 11
  18. 30000
  19. 20
  20. 55
  21. 60
  22. 285
  23. 56
  24. 42
  25. 4
  26. 65
  27. 28
  28. 2
  29. 76
  30. 25
  31. 88
  32. 45
  33. 5
  34. 21
  35. 60
  36. 180
  37. 1300
  38. 4
  39. 90
  40. 5

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