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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 174 · 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 LCM of 7, 4 and 2.
  2. 2.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 12, 4 or 15.
  3. 3.Which of these numbers divides exactly by 3? (a) 6994 (b) 2964 (c) 3073 (d) 6724
  4. 4.How many factors does 15 have?
  5. 5.What is the smallest number you must take away from 339 so that it divides exactly by 11?
  6. 6.9/12 − 4/7 =
  7. 7.Two tanks hold 175 litres and 125 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  8. 8.6/7 × 7/8 =
  9. 9.5/7 + 7/9 =
  10. 10.Find the third proportional to 9 and 18 (that is, 9 : 18 = 18 : ?).
  11. 11.19.2 ÷ 2 =
  12. 12.What percent of 25 is 23?
  13. 13.A car goes 253 km on 11 litres of petrol. How far can it go on 13 litres (in km)?
  14. 14.7 : 2 = 42 : ?
  15. 15.Find the third proportional to 7 and 35 (that is, 7 : 35 = 35 : ?).
  16. 16.The HCF of two numbers is 2 and their LCM is 126. One of the numbers is 14. What is the other number?
  17. 17.Three temple bells ring every 10, 24 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  18. 18.The HCF of two numbers is 4 and their LCM is 120. One of the numbers is 24. What is the other number?
  19. 19.What is the smallest number you must add to 272 so that it divides exactly by 9?
  20. 20.What percent of 250 is 15?
  21. 21.Which of these numbers divides exactly by 6? (a) 6736 (b) 1710 (c) 4151 (d) 8530
  22. 22.What percent of 25 is 7?
  23. 23.A hostel has enough food for 4 students for 8 days. How many days will the same food last for 2 students?
  24. 24.Three temple bells ring every 5, 20 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  25. 25.50% of a number is 96. What is the number?
  26. 26.Priya scored 12 marks out of 80 in a test. What percentage did Priya score?
  27. 27.Round 32.17 to one decimal place. =
  28. 28.What percent of 40 is 24?
  29. 29.Which is closest to 805 + 398 + 898? (a) 2200 (b) 2300 (c) 2100 (d) 2000
  30. 30.A hall floor is 125 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  31. 31.Which of these numbers divides exactly by 3? (a) 1540 (b) 9871 (c) 1593 (d) 8342
  32. 32.Which of these numbers divides exactly by 3? (a) 5837 (b) 8863 (c) 2567 (d) 6036
  33. 33.The HCF of two numbers is 2 and their LCM is 20. One of the numbers is 10. What is the other number?
  34. 34.Round 52.61 to one decimal place. =
  35. 35.Find the smallest number bigger than 12 that leaves a remainder of 5 when divided by 9, 12 or 8.
  36. 36.Find the HCF of 30 and 50.
  37. 37.What is 1/7 of 35 km?
  38. 38.1/2 × 5/7 =
  39. 39.17 + 6 × 5 − 13 =
  40. 40.Find the third proportional to 3 and 15 (that is, 3 : 15 = 15 : ?).

Answer key

  1. 28
  2. 61
  3. 2964
  4. 4
  5. 9
  6. 5/28
  7. 25
  8. 3/4
  9. 94/63
  10. 36
  11. 9.6
  12. 92
  13. 299
  14. 12
  15. 175
  16. 18
  17. 120
  18. 20
  19. 7
  20. 6
  21. 1710
  22. 28
  23. 16
  24. 40
  25. 192
  26. 15
  27. 32.2
  28. 60
  29. 2100
  30. 20
  31. 1593
  32. 6036
  33. 4
  34. 52.6
  35. 77
  36. 10
  37. 5
  38. 5/14
  39. 34
  40. 75

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