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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 21 · 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.How many factors does 65 have?
  2. 2.The HCF of two numbers is 5 and their LCM is 60. One of the numbers is 20. What is the other number?
  3. 3.Two tanks hold 60 litres and 150 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  4. 4.Which of these numbers divides exactly by 11? (a) 8358 (b) 9649 (c) 5027 (d) 8790
  5. 5.What is 40% of 30?
  6. 6.Which is closest to 897 × 38? (Round each number first.) (a) 360000 (b) 72000 (c) 3600 (d) 36000
  7. 7.Find the LCM of 14 and 8.
  8. 8.40% of a number is 194. What is the number?
  9. 9.Find the LCM of 54 and 42.
  10. 10.Round 88250 to the nearest thousand.
  11. 11.Which of these numbers divides exactly by 6? (a) 6126 (b) 1484 (c) 8165 (d) 7751
  12. 12.What is the smallest number you must take away from 691 so that it divides exactly by 6?
  13. 13.17.1 ÷ 3 =
  14. 14.2 × (25 − 12) + 9 ÷ 3 =
  15. 15.Karan scored 3 marks out of 50 in a test. What percentage did Karan score?
  16. 16.Which is closest to 502 × 28? (Round each number first.) (a) 150000 (b) 1500 (c) 30000 (d) 15000
  17. 17.4 × (17 − 5) + 40 ÷ 5 =
  18. 18.28 + 6 × 3 − 23 =
  19. 19.Round 84672 to the nearest thousand.
  20. 20.Find the LCM of 42 and 54.
  21. 21.Round 16493 to the nearest ten.
  22. 22.Three temple bells ring every 24, 4 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  23. 23.A car goes 54 km on 6 litres of petrol. How far can it go on 29 litres (in km)?
  24. 24.If 11 pens cost ₹396, how much do 10 pens cost (in ₹)?
  25. 25.Zoya takes 54 seconds and Isha takes 90 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?
  26. 26.What is 40% of 185?
  27. 27.9 × (11 − 8) + 27 ÷ 3 =
  28. 28.What is the smallest number you must add to 555 so that it divides exactly by 12?
  29. 29.A car goes 66 km on 3 litres of petrol. How far can it go on 27 litres (in km)?
  30. 30.How many factors does 91 have?
  31. 31.Which of these numbers divides exactly by 6? (a) 3321 (b) 2037 (c) 3116 (d) 5874
  32. 32.How many factors does 86 have?
  33. 33.Find the LCM of 54 and 12.
  34. 34.What is 10% of 570?
  35. 35.A hall floor is 315 cm long and 135 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  36. 36.Find the LCM of 40 and 25.
  37. 37.How many factors does 74 have?
  38. 38.Aditya takes 75 seconds and Saanvi 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?
  39. 39.How many factors does 44 have?
  40. 40.6 × (11 − 5) + 40 ÷ 4 =

Answer key

  1. 4
  2. 15
  3. 30
  4. 5027
  5. 12
  6. 36000
  7. 56
  8. 485
  9. 378
  10. 88000
  11. 6126
  12. 1
  13. 5.7
  14. 29
  15. 6
  16. 15000
  17. 56
  18. 23
  19. 85000
  20. 378
  21. 16490
  22. 72
  23. 261
  24. 360
  25. 270
  26. 74
  27. 36
  28. 9
  29. 594
  30. 4
  31. 5874
  32. 4
  33. 108
  34. 57
  35. 21
  36. 200
  37. 4
  38. 225
  39. 6
  40. 46

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