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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 114 · 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.Three temple bells ring every 8, 18 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  2. 2.A hall floor is 300 cm long and 180 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  3. 3.Find the LCM of 2, 5 and 13.
  4. 4.Divide ₹164 between Farhan and Kabir in the ratio 1 : 3. How much does Farhan get (in ₹)?
  5. 5.Which is closest to 1203 ÷ 39? (a) 30 (b) 60 (c) 15 (d) 300
  6. 6.If 6 pencil boxes cost ₹228, how much do 12 pencil boxes cost (in ₹)?
  7. 7.5 : 4 = 15 : ?
  8. 8.The ratio of boys to girls in a class is 5 : 6. There are 10 boys. How many girls are there?
  9. 9.7 : 12 = 63 : ?
  10. 10.7/9 of 54 + 4 × 2 =
  11. 11.How many factors does 17 have?
  12. 12.Two tanks hold 200 litres and 360 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  13. 13.Two tanks hold 45 litres and 120 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  14. 14.Find the LCM of 14 and 18.
  15. 15.Round 54274 to the nearest hundred.
  16. 16.What is 10% of 320?
  17. 17.Three temple bells ring every 6, 15 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  18. 18.Which is closest to 201 × 81? (Round each number first.) (a) 160000 (b) 1600 (c) 16000 (d) 32000
  19. 19.Two tanks hold 50 litres and 175 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  20. 20.How many factors does 32 have?
  21. 21.Divide ₹374 between Meera and Diya in the ratio 3 : 8. How much does Diya get (in ₹)?
  22. 22.Find the HCF of 14 and 6.
  23. 23.A car goes 152 km on 8 litres of petrol. How far can it go on 37 litres (in km)?
  24. 24.(20 + 5) × 4 − 23 =
  25. 25.1.54 + 7.4 =
  26. 26.The ratio of boys to girls in a class is 9 : 8. There are 90 boys. How many girls are there?
  27. 27.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 10, 6 or 8.
  28. 28.9 ÷ 3 × 2 + 7 =
  29. 29.Divide ₹84 between Aarav and Meera in the ratio 2 : 1. How much does Aarav get (in ₹)?
  30. 30.If 3 mangoes cost ₹144, how much do 8 mangoes cost (in ₹)?
  31. 31.Find the third proportional to 5 and 15 (that is, 5 : 15 = 15 : ?).
  32. 32.A hall floor is 140 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  33. 33.Find the HCF of 96 and 108.
  34. 34.Find the LCM of 24 and 54.
  35. 35.Ananya takes 30 seconds and Kabir takes 45 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?
  36. 36.Find the HCF of 15 and 25.
  37. 37.What percent of 400 is 84?
  38. 38.If 4 kg of rice costs ₹112, how many kg can you buy for ₹336?
  39. 39.4/9 − 1/6 =
  40. 40.If 3 pens cost ₹174, how much do 17 pens cost (in ₹)?

Answer key

  1. 72
  2. 15
  3. 130
  4. 41
  5. 30
  6. 456
  7. 12
  8. 12
  9. 108
  10. 50
  11. 2
  12. 40
  13. 15
  14. 126
  15. 54300
  16. 32
  17. 60
  18. 16000
  19. 25
  20. 6
  21. 272
  22. 2
  23. 703
  24. 77
  25. 8.94
  26. 80
  27. 121
  28. 13
  29. 56
  30. 384
  31. 45
  32. 42
  33. 12
  34. 216
  35. 90
  36. 5
  37. 21
  38. 12
  39. 5/18
  40. 986

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