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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 123 · 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.Two tanks hold 10 litres and 15 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  2. 2.59.4 ÷ 6 =
  3. 3.Find the third proportional to 4 and 12 (that is, 4 : 12 = 12 : ?).
  4. 4.What percent of 400 is 140?
  5. 5.If 8 pens cost ₹96, how much do 11 pens cost (in ₹)?
  6. 6.1/2 + 5/7 =
  7. 7.How many factors does 55 have?
  8. 8.A car goes 128 km on 8 litres of petrol. How far can it go on 12 litres (in km)?
  9. 9.Three temple bells ring every 20, 5 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  10. 10.Which of these numbers divides exactly by 11? (a) 7703 (b) 7224 (c) 2420 (d) 6354
  11. 11.6/8 × 1/2 =
  12. 12.7/8 of 96 + 6 × 4 =
  13. 13.Two tanks hold 60 litres and 90 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  14. 14.Which is closest to 204 × 91? (Round each number first.) (a) 36000 (b) 1800 (c) 18000 (d) 180000
  15. 15.A hostel has enough food for 10 students for 17 days. How many days will the same food last for 5 students?
  16. 16.A hall floor is 140 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  17. 17.23.2 ÷ 4 =
  18. 18.The ratio of boys to girls in a class is 6 : 5. There are 18 boys. How many girls are there?
  19. 19.Find the third proportional to 5 and 20 (that is, 5 : 20 = 20 : ?).
  20. 20.(17 + 4) × 8 − 10 =
  21. 21.2/9 of 90 + 8 × 7 =
  22. 22.Write 1/4 as a percent.
  23. 23.11 : 15 = 77 : ?
  24. 24.Find the LCM of 8 and 12.
  25. 25.Diya scored 18 marks out of 25 in a test. What percentage did Diya score?
  26. 26.If 12 bottles of juice cost ₹120, how much do 5 bottles of juice cost (in ₹)?
  27. 27.If 8 kg of rice costs ₹216, how many kg can you buy for ₹135?
  28. 28.Which is closest to 998 ÷ 19? (a) 500 (b) 50 (c) 25 (d) 100
  29. 29.How many factors does 51 have?
  30. 30.Find the HCF of 36 and 84.
  31. 31.Two tanks hold 180 litres and 135 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  32. 32.The HCF of two numbers is 3 and their LCM is 72. One of the numbers is 24. What is the other number?
  33. 33.The HCF of two numbers is 5 and their LCM is 105. One of the numbers is 35. What is the other number?
  34. 34.1/3 of 9 + 8 × 9 =
  35. 35.If 3 kg of rice costs ₹183, how many kg can you buy for ₹793?
  36. 36.The ratio of boys to girls in a class is 7 : 4. There are 21 boys. How many girls are there?
  37. 37.Which is closest to 497 × 88? (Round each number first.) (a) 45000 (b) 90000 (c) 4500 (d) 450000
  38. 38.9.35 + 1.8 =
  39. 39.Three temple bells ring every 20, 5 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  40. 40.Which is closest to 603 × 51? (Round each number first.) (a) 300000 (b) 60000 (c) 3000 (d) 30000

Answer key

  1. 5
  2. 9.9
  3. 36
  4. 35
  5. 132
  6. 17/14
  7. 4
  8. 192
  9. 60
  10. 2420
  11. 3/8
  12. 108
  13. 30
  14. 18000
  15. 34
  16. 35
  17. 5.8
  18. 15
  19. 80
  20. 158
  21. 76
  22. 25
  23. 105
  24. 24
  25. 72
  26. 50
  27. 5
  28. 50
  29. 4
  30. 12
  31. 45
  32. 9
  33. 15
  34. 75
  35. 13
  36. 12
  37. 45000
  38. 11.15
  39. 60
  40. 30000

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