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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 843 · 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.Which is closest to 1499 ÷ 31? (a) 25 (b) 100 (c) 500 (d) 50
  2. 2.The ratio of boys to girls in a class is 4 : 5. There are 16 boys. How many girls are there?
  3. 3.Two tanks hold 135 litres and 30 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  4. 4.Which of these numbers divides exactly by 11? (a) 9406 (b) 4664 (c) 2051 (d) 8464
  5. 5.5.44 + 9.3 =
  6. 6.5 painters can paint a school in 7 days. How many days would 7 painters take, working at the same speed?
  7. 7.12 : 9 = 24 : ?
  8. 8.77 ÷ 7 × 6 + 6 =
  9. 9.What is the smallest number you must take away from 242 so that it divides exactly by 9?
  10. 10.Diya scored 16 marks out of 80 in a test. What percentage did Diya score?
  11. 11.7 × (13 − 8) + 36 ÷ 3 =
  12. 12.73 − 63 ÷ 7 × 8 =
  13. 13.39 + 11 × 7 − 28 =
  14. 14.Find the third proportional to 5 and 25 (that is, 5 : 25 = 25 : ?).
  15. 15.4/5 of 40 + 8 × 3 =
  16. 16.Which is closest to 703 + 901 + 296? (a) 2100 (b) 2000 (c) 1900 (d) 1800
  17. 17.Three temple bells ring every 4, 18 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  18. 18.2/7 × 2/10 =
  19. 19.12% of a number is 45. What is the number?
  20. 20.15% of a number is 69. What is the number?
  21. 21.10 painters can paint a school in 5 days. How many days would 2 painters take, working at the same speed?
  22. 22.Which is closest to 302 × 18? (Round each number first.) (a) 600 (b) 60000 (c) 6000 (d) 12000
  23. 23.2 × (20 − 1) + 35 ÷ 7 =
  24. 24.Find the HCF of 24 and 27.
  25. 25.2/12 × 1/5 =
  26. 26.Find the HCF of 8 and 18.
  27. 27.Find the HCF of 60 and 45.
  28. 28.7.18 + 2.2 =
  29. 29.What is 40% of 140?
  30. 30.Which is closest to 802 + 803 + 795? (a) 2300 (b) 2400 (c) 2500 (d) 2600
  31. 31.What is the smallest number you must take away from 122 so that it divides exactly by 6?
  32. 32.Which is closest to 504 × 21? (Round each number first.) (a) 100000 (b) 20000 (c) 10000 (d) 1000
  33. 33.A hall floor is 135 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  34. 34.A car goes 60 km on 6 litres of petrol. How far can it go on 17 litres (in km)?
  35. 35.Write 19/20 as a percent.
  36. 36.Find the HCF of 135 and 75.
  37. 37.Find the LCM of 4, 9 and 15.
  38. 38.What is 7/10 of 120 km?
  39. 39.If 7 erasers cost ₹105, how much do 20 erasers cost (in ₹)?
  40. 40.(9 + 4) × 3 − 22 =

Answer key

  1. 50
  2. 20
  3. 15
  4. 4664
  5. 14.74
  6. 5
  7. 18
  8. 72
  9. 8
  10. 20
  11. 47
  12. 1
  13. 88
  14. 125
  15. 56
  16. 1900
  17. 72
  18. 2/35
  19. 375
  20. 460
  21. 25
  22. 6000
  23. 43
  24. 3
  25. 1/30
  26. 2
  27. 15
  28. 9.38
  29. 56
  30. 2400
  31. 2
  32. 10000
  33. 6
  34. 170
  35. 95
  36. 15
  37. 180
  38. 84
  39. 300
  40. 17

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