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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 949 · 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.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 5, 10 or 3.
  2. 2.How many factors does 31 have?
  3. 3.Divide ₹385 between Karan and Zoya in the ratio 1 : 6. How much does Zoya get (in ₹)?
  4. 4.40 ÷ 5 × 7 + 6 =
  5. 5.Three temple bells ring every 12, 18 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  6. 6.Which is closest to 902 × 28? (Round each number first.) (a) 270000 (b) 27000 (c) 2700 (d) 54000
  7. 7.If 3 kg of rice costs ₹144, how many kg can you buy for ₹432?
  8. 8.Which is closest to 504 × 79? (Round each number first.) (a) 40000 (b) 400000 (c) 80000 (d) 4000
  9. 9.A car goes 69 km on 3 litres of petrol. How far can it go on 13 litres (in km)?
  10. 10.Which is closest to 598 + 702 + 296? (a) 1800 (b) 1600 (c) 1500 (d) 1700
  11. 11.If 4 pens cost ₹68, how much do 6 pens cost (in ₹)?
  12. 12.Aarav takes 80 seconds and Arjun takes 50 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?
  13. 13.Round 26.26 to one decimal place. =
  14. 14.What percent of 40 is 8?
  15. 15.What is the smallest number you must take away from 512 so that it divides exactly by 12?
  16. 16.Round 83.19 to one decimal place. =
  17. 17.1/4 − 1/10 =
  18. 18.Find the LCM of 14 and 6.
  19. 19.2/3 × 5/8 =
  20. 20.What is the smallest number you must add to 866 so that it divides exactly by 12?
  21. 21.2/7 × 4/10 =
  22. 22.Find the LCM of 4, 2 and 3.
  23. 23.What is the smallest number you must add to 460 so that it divides exactly by 8?
  24. 24.Find the third proportional to 4 and 8 (that is, 4 : 8 = 8 : ?).
  25. 25.9.89 + 2.6 =
  26. 26.The HCF of two numbers is 2 and their LCM is 28. One of the numbers is 14. What is the other number?
  27. 27.Find the third proportional to 9 and 27 (that is, 9 : 27 = 27 : ?).
  28. 28.5 : 13 = 15 : ?
  29. 29.Find the LCM of 3, 14 and 5.
  30. 30.Find the LCM of 24 and 15.
  31. 31.Which is closest to 2992 ÷ 51? (a) 120 (b) 30 (c) 600 (d) 60
  32. 32.Arjun takes 40 seconds and Dev 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?
  33. 33.Find the third proportional to 7 and 35 (that is, 7 : 35 = 35 : ?).
  34. 34.Find the HCF of 26 and 117.
  35. 35.Which is closest to 4509 ÷ 49? (a) 180 (b) 900 (c) 90 (d) 45
  36. 36.Which of these numbers divides exactly by 9? (a) 8656 (b) 7930 (c) 7025 (d) 6588
  37. 37.40% of a number is 212. What is the number?
  38. 38.Round 10672 to the nearest thousand.
  39. 39.Find the third proportional to 8 and 16 (that is, 8 : 16 = 16 : ?).
  40. 40.How many factors does 94 have?

Answer key

  1. 31
  2. 2
  3. 330
  4. 62
  5. 36
  6. 27000
  7. 9
  8. 40000
  9. 299
  10. 1600
  11. 102
  12. 400
  13. 26.3
  14. 20
  15. 8
  16. 83.2
  17. 3/20
  18. 42
  19. 5/12
  20. 10
  21. 4/35
  22. 12
  23. 4
  24. 16
  25. 12.49
  26. 4
  27. 81
  28. 39
  29. 210
  30. 120
  31. 60
  32. 360
  33. 175
  34. 13
  35. 90
  36. 6588
  37. 530
  38. 11000
  39. 32
  40. 4

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