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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 28 · 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 add to 549 so that it divides exactly by 7?
  2. 2.Which is closest to 3496 ÷ 49? (a) 140 (b) 35 (c) 700 (d) 70
  3. 3.Three temple bells ring every 6, 9 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  4. 4.The HCF of two numbers is 6 and their LCM is 336. One of the numbers is 42. What is the other number?
  5. 5.10 : 8 = 60 : ?
  6. 6.Which is closest to 4499 ÷ 51? (a) 90 (b) 180 (c) 45 (d) 900
  7. 7.Two tanks hold 105 litres and 90 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  8. 8.Two tanks hold 100 litres and 75 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  9. 9.2 × (29 − 11) + 18 ÷ 9 =
  10. 10.9.7 × 6 =
  11. 11.3 × (13 − 11) + 36 ÷ 9 =
  12. 12.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 12, 9 or 4.
  13. 13.Three temple bells ring every 5, 24 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  14. 14.3/5 − 1/11 =
  15. 15.1.01 + 6.7 =
  16. 16.If 3 kg of rice costs ₹168, how many kg can you buy for ₹280?
  17. 17.The ratio of boys to girls in a class is 1 : 3. There are 2 boys. How many girls are there?
  18. 18.What is the smallest number you must add to 845 so that it divides exactly by 12?
  19. 19.(15 + 11) × 7 − 18 =
  20. 20.Find the HCF of 16 and 10.
  21. 21.12 : 4 = 84 : ?
  22. 22.What percent of 80 is 12?
  23. 23.8 : 6 = 16 : ?
  24. 24.Write 3/10 as a percent.
  25. 25.Which is closest to 803 ÷ 41? (a) 40 (b) 10 (c) 20 (d) 200
  26. 26.Three temple bells ring every 8, 10 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  27. 27.Divide ₹198 between Tara and Zoya in the ratio 6 : 5. How much does Tara get (in ₹)?
  28. 28.Find the LCM of 9 and 7.
  29. 29.A car goes 105 km on 5 litres of petrol. How far can it go on 6 litres (in km)?
  30. 30.A car goes 36 km on 4 litres of petrol. How far can it go on 9 litres (in km)?
  31. 31.Find the LCM of 5 and 3.
  32. 32.Find the HCF of 12 and 8.
  33. 33.Divide ₹261 between Meera and Kavya in the ratio 4 : 5. How much does Meera get (in ₹)?
  34. 34.What percent of 200 is 158?
  35. 35.Which of these numbers divides exactly by 4? (a) 2130 (b) 6068 (c) 3171 (d) 5771
  36. 36.The HCF of two numbers is 2 and their LCM is 40. One of the numbers is 10. What is the other number?
  37. 37.What is the smallest number you must add to 763 so that it divides exactly by 4?
  38. 38.1/2 − 3/8 =
  39. 39.A car goes 48 km on 6 litres of petrol. How far can it go on 13 litres (in km)?
  40. 40.Which is closest to 791 ÷ 39? (a) 40 (b) 10 (c) 200 (d) 20

Answer key

  1. 4
  2. 70
  3. 90
  4. 48
  5. 48
  6. 90
  7. 15
  8. 25
  9. 38
  10. 58.2
  11. 10
  12. 37
  13. 120
  14. 28/55
  15. 7.71
  16. 5
  17. 6
  18. 7
  19. 164
  20. 2
  21. 28
  22. 15
  23. 12
  24. 30
  25. 20
  26. 120
  27. 108
  28. 63
  29. 126
  30. 81
  31. 15
  32. 4
  33. 116
  34. 79
  35. 6068
  36. 8
  37. 1
  38. 1/8
  39. 104
  40. 20

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