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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 975 · 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. 1.6 : 15 = 36 : ?
  2. 2.4/9 of 27 + 6 × 7 =
  3. 3.22 + 4 × 10 − 15 =
  4. 4.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 5, 4 or 10.
  5. 5.If 10 bottles of juice cost ₹120, how much do 5 bottles of juice cost (in ₹)?
  6. 6.Which is closest to 798 × 60? (Round each number first.) (a) 48000 (b) 96000 (c) 4800 (d) 480000
  7. 7.Find the HCF of 12 and 32.
  8. 8.Which of these numbers divides exactly by 3? (a) 2123 (b) 8135 (c) 9727 (d) 7902
  9. 9.Which is closest to 103 + 603 + 95? (a) 1000 (b) 800 (c) 700 (d) 900
  10. 10.What is the smallest number you must take away from 883 so that it divides exactly by 12?
  11. 11.41 + 10 × 2 − 21 =
  12. 12.The HCF of two numbers is 9 and their LCM is 504. One of the numbers is 72. What is the other number?
  13. 13.What percent of 250 is 140?
  14. 14.Which is closest to 2799 ÷ 39? (a) 140 (b) 35 (c) 70 (d) 700
  15. 15.What is the smallest number you must take away from 211 so that it divides exactly by 6?
  16. 16.A hall floor is 125 cm long and 50 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  17. 17.The HCF of two numbers is 8 and their LCM is 192. One of the numbers is 24. What is the other number?
  18. 18.Find the third proportional to 7 and 28 (that is, 7 : 28 = 28 : ?).
  19. 19.Find the LCM of 4, 10 and 14.
  20. 20.Which is closest to 498 × 21? (Round each number first.) (a) 100000 (b) 1000 (c) 20000 (d) 10000
  21. 21.Three temple bells ring every 8, 6 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  22. 22.8 painters can paint a school in 26 days. How many days would 4 painters take, working at the same speed?
  23. 23.Which is closest to 596 × 28? (Round each number first.) (a) 1800 (b) 18000 (c) 180000 (d) 36000
  24. 24.A car goes 44 km on 4 litres of petrol. How far can it go on 11 litres (in km)?
  25. 25.Which of these numbers divides exactly by 11? (a) 8629 (b) 9845 (c) 5023 (d) 5111
  26. 26.10% of a number is 42. What is the number?
  27. 27.The HCF of two numbers is 8 and their LCM is 448. One of the numbers is 64. What is the other number?
  28. 28.44 + 7 × 7 − 20 =
  29. 29.Three temple bells ring every 20, 8 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  30. 30.10 : 14 = 40 : ?
  31. 31.What is 10% of 20?
  32. 32.47.5 ÷ 5 =
  33. 33.Find the LCM of 8 and 36.
  34. 34.How many factors does 64 have?
  35. 35.What is 1/3 of 6 kg?
  36. 36.Three temple bells ring every 4, 15 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  37. 37.Find the HCF of 84 and 108.
  38. 38.18 ÷ 6 × 5 + 9 =
  39. 39.Which of these numbers divides exactly by 4? (a) 6563 (b) 4676 (c) 9297 (d) 3385
  40. 40.Three temple bells ring every 30, 20 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?

Answer key

  1. 90
  2. 54
  3. 47
  4. 21
  5. 60
  6. 48000
  7. 4
  8. 7902
  9. 800
  10. 7
  11. 40
  12. 63
  13. 56
  14. 70
  15. 1
  16. 10
  17. 64
  18. 112
  19. 140
  20. 10000
  21. 120
  22. 52
  23. 18000
  24. 121
  25. 9845
  26. 420
  27. 56
  28. 73
  29. 40
  30. 56
  31. 2
  32. 9.5
  33. 72
  34. 7
  35. 2
  36. 60
  37. 12
  38. 24
  39. 4676
  40. 60

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