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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 558 · 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 third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
  2. 2.4 : 13 = 20 : ?
  3. 3.Which is closest to 603 + 403 + 495? (a) 1700 (b) 1400 (c) 1600 (d) 1500
  4. 4.79 − 36 ÷ 4 × 5 =
  5. 5.Find the HCF of 6 and 9.
  6. 6.Two tanks hold 135 litres and 90 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  7. 7.The HCF of two numbers is 8 and their LCM is 120. One of the numbers is 40. What is the other number?
  8. 8.If 4 mangoes cost ₹104, how much do 17 mangoes cost (in ₹)?
  9. 9.The HCF of two numbers is 3 and their LCM is 72. One of the numbers is 9. What is the other number?
  10. 10.Vivaan takes 48 seconds and Ananya takes 40 seconds to run once round a track. They start together from the start line. After how many seconds will they first be at the start line together again?
  11. 11.Write 4/5 as a percent.
  12. 12.What percent of 25 is 19?
  13. 13.Round 65186 to the nearest hundred.
  14. 14.Find the third proportional to 4 and 16 (that is, 4 : 16 = 16 : ?).
  15. 15.Find the HCF of 14 and 6.
  16. 16.6/12 + 1/3 =
  17. 17.Find the LCM of 12 and 27.
  18. 18.51 − 27 ÷ 3 × 3 =
  19. 19.Write 3/20 as a percent.
  20. 20.If 3 kg of rice costs ₹87, how many kg can you buy for ₹406?
  21. 21.Divide ₹230 between Aarav and Farhan in the ratio 7 : 3. How much does Farhan get (in ₹)?
  22. 22.10 : 14 = 70 : ?
  23. 23.5.7 × 2 =
  24. 24.Which is closest to 397 + 502 + 302? (a) 1400 (b) 1300 (c) 1100 (d) 1200
  25. 25.5 : 3 = 20 : ?
  26. 26.Find the LCM of 7 and 6.
  27. 27.29 + 3 × 4 − 7 =
  28. 28.Vivaan scored 4 marks out of 25 in a test. What percentage did Vivaan score?
  29. 29.18 − 21 ÷ 7 × 3 =
  30. 30.A hall floor is 175 cm long and 50 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  31. 31.2/5 of 50 + 4 × 3 =
  32. 32.Divide ₹210 between Kabir and Priya in the ratio 5 : 2. How much does Kabir get (in ₹)?
  33. 33.A car goes 28 km on 2 litres of petrol. How far can it go on 37 litres (in km)?
  34. 34.Find the LCM of 8 and 6.
  35. 35.What is the smallest number you must add to 966 so that it divides exactly by 13?
  36. 36.18 + 10 × 7 − 1 =
  37. 37.Find the LCM of 2, 3 and 4.
  38. 38.A hall floor is 315 cm long and 180 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  39. 39.12 : 5 = 72 : ?
  40. 40.1/4 + 2/3 =

Answer key

  1. 32
  2. 65
  3. 1500
  4. 34
  5. 3
  6. 45
  7. 24
  8. 442
  9. 24
  10. 240
  11. 80
  12. 76
  13. 65200
  14. 64
  15. 2
  16. 5/6
  17. 108
  18. 24
  19. 15
  20. 14
  21. 69
  22. 98
  23. 11.4
  24. 1200
  25. 12
  26. 42
  27. 34
  28. 16
  29. 9
  30. 14
  31. 32
  32. 150
  33. 518
  34. 24
  35. 9
  36. 87
  37. 12
  38. 28
  39. 30
  40. 11/12

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