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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 591 · 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 797 so that it divides exactly by 6?
  2. 2.19.5 ÷ 3 =
  3. 3.7.9 × 9 =
  4. 4.Find the LCM of 5, 3 and 15.
  5. 5.What is the smallest number you must add to 197 so that it divides exactly by 11?
  6. 6.Find the LCM of 3, 5 and 10.
  7. 7.How many factors does 70 have?
  8. 8.7 × (18 − 17) + 40 ÷ 5 =
  9. 9.What is the smallest number you must take away from 997 so that it divides exactly by 4?
  10. 10.Find the LCM of 14, 10 and 2.
  11. 11.28 − 30 ÷ 6 × 3 =
  12. 12.Which of these numbers divides exactly by 4? (a) 1062 (b) 3188 (c) 2810 (d) 6754
  13. 13.6.62 + 9.8 =
  14. 14.1/2 of 6 + 6 × 6 =
  15. 15.Round 43.73 to one decimal place. =
  16. 16.Three temple bells ring every 20, 6 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  17. 17.If 4 kg of rice costs ₹272, how many kg can you buy for ₹884?
  18. 18.Which is closest to 795 + 101 + 903? (a) 1800 (b) 2000 (c) 1900 (d) 1700
  19. 19.Aarav takes 75 seconds and Dev takes 40 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?
  20. 20.If 6 kg of rice costs ₹144, how many kg can you buy for ₹96?
  21. 21.1/6 of 12 + 2 × 2 =
  22. 22.Find the LCM of 7, 9 and 14.
  23. 23.5 × (10 − 2) + 12 ÷ 6 =
  24. 24.Write 3/10 as a percent.
  25. 25.A car goes 240 km on 12 litres of petrol. How far can it go on 7 litres (in km)?
  26. 26.Find the third proportional to 6 and 12 (that is, 6 : 12 = 12 : ?).
  27. 27.6/8 − 1/2 =
  28. 28.What is 12% of 250?
  29. 29.Two tanks hold 30 litres and 105 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  30. 30.Divide ₹663 between Tara and Rohan in the ratio 4 : 9. How much does Tara get (in ₹)?
  31. 31.12 ÷ 2 × 7 + 30 =
  32. 32.What is the smallest number you must take away from 945 so that it divides exactly by 8?
  33. 33.A hall floor is 270 cm long and 225 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  34. 34.Which is closest to 198 × 91? (Round each number first.) (a) 1800 (b) 36000 (c) 18000 (d) 180000
  35. 35.If 6 kg of rice costs ₹378, how many kg can you buy for ₹315?
  36. 36.Which of these numbers divides exactly by 3? (a) 2624 (b) 8629 (c) 3395 (d) 5697
  37. 37.If 7 kg of rice costs ₹280, how many kg can you buy for ₹240?
  38. 38.If 2 pens cost ₹22, how much do 4 pens cost (in ₹)?
  39. 39.Two tanks hold 210 litres and 150 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  40. 40.Which of these numbers divides exactly by 3? (a) 8427 (b) 3740 (c) 1820 (d) 1496

Answer key

  1. 5
  2. 6.5
  3. 71.1
  4. 15
  5. 1
  6. 30
  7. 8
  8. 15
  9. 1
  10. 70
  11. 13
  12. 3188
  13. 16.42
  14. 39
  15. 43.7
  16. 60
  17. 13
  18. 1800
  19. 600
  20. 4
  21. 6
  22. 126
  23. 42
  24. 30
  25. 140
  26. 24
  27. 1/4
  28. 30
  29. 15
  30. 204
  31. 72
  32. 1
  33. 30
  34. 18000
  35. 5
  36. 5697
  37. 6
  38. 44
  39. 30
  40. 8427

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