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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 97 · 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.A car goes 175 km on 7 litres of petrol. How far can it go on 28 litres (in km)?
  2. 2.What is 5% of 300?
  3. 3.(4 + 15) × 2 − 12 =
  4. 4.56.7 ÷ 7 =
  5. 5.Round 36.42 to one decimal place. =
  6. 6.Two tanks hold 25 litres and 30 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  7. 7.20.4 ÷ 6 =
  8. 8.1.83 + 8.6 =
  9. 9.(19 + 7) × 8 − 3 =
  10. 10.Round 14198 to the nearest hundred.
  11. 11.Which of these numbers divides exactly by 11? (a) 8544 (b) 1263 (c) 4368 (d) 9966
  12. 12.4 painters can paint a school in 23 days. How many days would 2 painters take, working at the same speed?
  13. 13.Find the LCM of 13, 12 and 2.
  14. 14.6 : 10 = 12 : ?
  15. 15.A car goes 16 km on 2 litres of petrol. How far can it go on 14 litres (in km)?
  16. 16.What is the smallest number you must take away from 187 so that it divides exactly by 7?
  17. 17.15 ÷ 3 × 6 + 19 =
  18. 18.14 ÷ 7 × 8 + 28 =
  19. 19.Write 1/2 as a percent.
  20. 20.Find the LCM of 6, 7 and 5.
  21. 21.6 painters can paint a school in 15 days. How many days would 15 painters take, working at the same speed?
  22. 22.What is 50% of 410?
  23. 23.What is the smallest number you must take away from 693 so that it divides exactly by 8?
  24. 24.The HCF of two numbers is 9 and their LCM is 108. One of the numbers is 27. What is the other number?
  25. 25.Find the LCM of 9, 14 and 6.
  26. 26.Find the third proportional to 4 and 12 (that is, 4 : 12 = 12 : ?).
  27. 27.30% of a number is 6. What is the number?
  28. 28.What is the smallest number you must take away from 755 so that it divides exactly by 7?
  29. 29.Which of these numbers divides exactly by 4? (a) 4772 (b) 4271 (c) 1299 (d) 7109
  30. 30.Which is closest to 1796 ÷ 21? (a) 45 (b) 180 (c) 900 (d) 90
  31. 31.Round 94.54 to one decimal place. =
  32. 32.Which is closest to 798 × 18? (Round each number first.) (a) 1600 (b) 160000 (c) 16000 (d) 32000
  33. 33.What percent of 50 is 41?
  34. 34.Three temple bells ring every 4, 6 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  35. 35.9/10 × 2/7 =
  36. 36.9 × (13 − 3) + 63 ÷ 9 =
  37. 37.Find the HCF of 6 and 14.
  38. 38.45 − 40 ÷ 8 × 4 =
  39. 39.Find the HCF of 36 and 32.
  40. 40.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?

Answer key

  1. 700
  2. 15
  3. 26
  4. 8.1
  5. 36.4
  6. 5
  7. 3.4
  8. 10.43
  9. 205
  10. 14200
  11. 9966
  12. 46
  13. 156
  14. 20
  15. 112
  16. 5
  17. 49
  18. 44
  19. 50
  20. 210
  21. 6
  22. 205
  23. 5
  24. 36
  25. 126
  26. 36
  27. 20
  28. 6
  29. 4772
  30. 90
  31. 94.5
  32. 16000
  33. 82
  34. 36
  35. 9/35
  36. 97
  37. 2
  38. 25
  39. 4
  40. 20

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