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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 983 · 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.Pooja scored 2 marks out of 40 in a test. What percentage did Pooja score?
  2. 2.Find the HCF of 44 and 55.
  3. 3.How many factors does 90 have?
  4. 4.Find the third proportional to 4 and 12 (that is, 4 : 12 = 12 : ?).
  5. 5.4 × (14 − 7) + 50 ÷ 5 =
  6. 6.Kavya scored 11 marks out of 20 in a test. What percentage did Kavya score?
  7. 7.120% of a number is 456. What is the number?
  8. 8.Find the third proportional to 9 and 36 (that is, 9 : 36 = 36 : ?).
  9. 9.Write 9/10 as a percent.
  10. 10.Which is closest to 701 × 88? (Round each number first.) (a) 126000 (b) 6300 (c) 630000 (d) 63000
  11. 11.Which is closest to 99 + 503 + 800? (a) 1300 (b) 1400 (c) 1600 (d) 1500
  12. 12.Two tanks hold 35 litres and 25 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  13. 13.Find the third proportional to 3 and 6 (that is, 3 : 6 = 6 : ?).
  14. 14.A car goes 136 km on 8 litres of petrol. How far can it go on 3 litres (in km)?
  15. 15.The HCF of two numbers is 9 and their LCM is 270. One of the numbers is 45. What is the other number?
  16. 16.Find the LCM of 6 and 9.
  17. 17.Two tanks hold 30 litres and 75 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  18. 18.What is 2/7 of 49 kg?
  19. 19.Three temple bells ring every 18, 9 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  20. 20.A car goes 33 km on 3 litres of petrol. How far can it go on 11 litres (in km)?
  21. 21.75% of a number is 306. What is the number?
  22. 22.A hall floor is 315 cm long and 225 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  23. 23.A hostel has enough food for 12 students for 8 days. How many days will the same food last for 16 students?
  24. 24.Find the LCM of 14 and 4.
  25. 25.Find the HCF of 18 and 27.
  26. 26.Three temple bells ring every 20, 12 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  27. 27.8 : 4 = 40 : ?
  28. 28.What is the smallest number you must take away from 161 so that it divides exactly by 6?
  29. 29.Divide ₹110 between Nisha and Aarav in the ratio 3 : 8. How much does Nisha get (in ₹)?
  30. 30.15 + 7 × 4 − 6 =
  31. 31.How many factors does 51 have?
  32. 32.Which is closest to 600 + 501 + 300? (a) 1300 (b) 1500 (c) 1600 (d) 1400
  33. 33.34 + 6 × 12 − 21 =
  34. 34.Which of these numbers divides exactly by 6? (a) 2268 (b) 5723 (c) 6332 (d) 8518
  35. 35.2/3 × 1/9 =
  36. 36.Arjun scored 38 marks out of 40 in a test. What percentage did Arjun score?
  37. 37.Find the LCM of 8 and 20.
  38. 38.A hall floor is 140 cm long and 40 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  39. 39.What is the smallest number you must take away from 982 so that it divides exactly by 3?
  40. 40.Find the LCM of 8, 3 and 4.

Answer key

  1. 5
  2. 11
  3. 12
  4. 36
  5. 38
  6. 55
  7. 380
  8. 144
  9. 90
  10. 63000
  11. 1400
  12. 5
  13. 12
  14. 51
  15. 54
  16. 18
  17. 15
  18. 14
  19. 72
  20. 121
  21. 408
  22. 35
  23. 6
  24. 28
  25. 9
  26. 60
  27. 20
  28. 5
  29. 30
  30. 37
  31. 4
  32. 1400
  33. 85
  34. 2268
  35. 2/27
  36. 95
  37. 40
  38. 14
  39. 1
  40. 24

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