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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 220 · 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 264 km on 12 litres of petrol. How far can it go on 26 litres (in km)?
  2. 2.What is 2/7 of 133 km?
  3. 3.30% of a number is 51. What is the number?
  4. 4.A hostel has enough food for 8 students for 23 days. How many days will the same food last for 23 students?
  5. 5.If 9 kites cost ₹144, how much do 2 kites cost (in ₹)?
  6. 6.Find the third proportional to 3 and 6 (that is, 3 : 6 = 6 : ?).
  7. 7.If 5 bottles of juice cost ₹280, how much do 2 bottles of juice cost (in ₹)?
  8. 8.Round 27.06 to one decimal place. =
  9. 9.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 8, 12 or 5.
  10. 10.(12 + 3) × 5 − 5 =
  11. 11.How many factors does 47 have?
  12. 12.Find the LCM of 5, 14 and 2.
  13. 13.What is 1/6 of 162 km?
  14. 14.Write 1/4 as a percent.
  15. 15.Three temple bells ring every 10, 4 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  16. 16.Divide ₹495 between Priya and Diya in the ratio 8 : 1. How much does Priya get (in ₹)?
  17. 17.How many factors does 66 have?
  18. 18.Three temple bells ring every 20, 10 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  19. 19.What is 120% of 180?
  20. 20.Find the LCM of 8 and 7.
  21. 21.What is the smallest number you must add to 171 so that it divides exactly by 12?
  22. 22.Round 56833 to the nearest hundred.
  23. 23.What is the smallest number you must take away from 959 so that it divides exactly by 4?
  24. 24.Which of these numbers divides exactly by 9? (a) 6368 (b) 1152 (c) 7832 (d) 1066
  25. 25.What is the smallest number you must take away from 491 so that it divides exactly by 12?
  26. 26.What is the smallest number you must take away from 993 so that it divides exactly by 13?
  27. 27.2 : 5 = 10 : ?
  28. 28.Which is closest to 201 × 71? (Round each number first.) (a) 14000 (b) 1400 (c) 28000 (d) 140000
  29. 29.A hall floor is 300 cm long and 240 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  30. 30.67 − 21 ÷ 3 × 4 =
  31. 31.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?
  32. 32.11 painters can paint a school in 8 days. How many days would 8 painters take, working at the same speed?
  33. 33.5 : 11 = 40 : ?
  34. 34.4/5 of 45 + 7 × 5 =
  35. 35.3 × (17 − 4) + 49 ÷ 7 =
  36. 36.3.21 + 6.4 =
  37. 37.The HCF of two numbers is 7 and their LCM is 280. One of the numbers is 56. What is the other number?
  38. 38.Find the HCF of 9 and 24.
  39. 39.If 3 kg of rice costs ₹270, how many kg can you buy for ₹450?
  40. 40.Which is closest to 404 × 59? (Round each number first.) (a) 48000 (b) 240000 (c) 2400 (d) 24000

Answer key

  1. 572
  2. 38
  3. 170
  4. 8
  5. 32
  6. 12
  7. 112
  8. 27.1
  9. 122
  10. 70
  11. 2
  12. 70
  13. 27
  14. 25
  15. 40
  16. 440
  17. 8
  18. 120
  19. 216
  20. 56
  21. 9
  22. 56800
  23. 3
  24. 1152
  25. 11
  26. 5
  27. 25
  28. 14000
  29. 20
  30. 39
  31. 20
  32. 11
  33. 88
  34. 71
  35. 46
  36. 9.61
  37. 35
  38. 3
  39. 5
  40. 24000

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