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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 55 · 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.The HCF of two numbers is 8 and their LCM is 448. One of the numbers is 56. What is the other number?
  2. 2.7 : 5 = 21 : ?
  3. 3.Saanvi takes 36 seconds and Meera takes 54 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?
  4. 4.What is the smallest number you must add to 457 so that it divides exactly by 3?
  5. 5.A car goes 120 km on 10 litres of petrol. How far can it go on 29 litres (in km)?
  6. 6.(15 + 6) × 6 − 24 =
  7. 7.Find the LCM of 15 and 35.
  8. 8.What is 4/5 of 85 students?
  9. 9.43 + 5 × 11 − 21 =
  10. 10.A car goes 32 km on 4 litres of petrol. How far can it go on 5 litres (in km)?
  11. 11.Find the LCM of 3, 15 and 8.
  12. 12.3 : 13 = 6 : ?
  13. 13.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 15, 8 or 6.
  14. 14.Which is closest to 902 + 95 + 304? (a) 1300 (b) 1400 (c) 1500 (d) 1200
  15. 15.How many factors does 47 have?
  16. 16.Divide ₹363 between Isha and Farhan in the ratio 6 : 5. How much does Isha get (in ₹)?
  17. 17.How many factors does 22 have?
  18. 18.Find the third proportional to 9 and 27 (that is, 9 : 27 = 27 : ?).
  19. 19.Find the LCM of 12, 7 and 8.
  20. 20.Find the HCF of 18 and 4.
  21. 21.3 painters can paint a school in 27 days. How many days would 9 painters take, working at the same speed?
  22. 22.Find the LCM of 5, 3 and 11.
  23. 23.Three temple bells ring every 8, 15 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  24. 24.Which of these numbers divides exactly by 6? (a) 5797 (b) 6717 (c) 2986 (d) 7884
  25. 25.24 ÷ 2 × 2 + 30 =
  26. 26.What percent of 25 is 8?
  27. 27.Divide ₹352 between Saanvi and Kavya in the ratio 8 : 3. How much does Saanvi get (in ₹)?
  28. 28.30 ÷ 6 × 9 + 16 =
  29. 29.Find the LCM of 15 and 12.
  30. 30.A car goes 120 km on 6 litres of petrol. How far can it go on 3 litres (in km)?
  31. 31.What percent of 400 is 280?
  32. 32.Rahul scored 16 marks out of 50 in a test. What percentage did Rahul score?
  33. 33.4.16 + 7.1 =
  34. 34.5.1 ÷ 3 =
  35. 35.Find the HCF of 24 and 16.
  36. 36.Rahul scored 42 marks out of 50 in a test. What percentage did Rahul score?
  37. 37.A hall floor is 240 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  38. 38.18.6 ÷ 3 =
  39. 39.7.9 × 5 =
  40. 40.Which is closest to 497 × 22? (Round each number first.) (a) 10000 (b) 100000 (c) 20000 (d) 1000

Answer key

  1. 64
  2. 15
  3. 108
  4. 2
  5. 348
  6. 102
  7. 105
  8. 68
  9. 77
  10. 40
  11. 120
  12. 26
  13. 122
  14. 1300
  15. 2
  16. 198
  17. 4
  18. 81
  19. 168
  20. 2
  21. 9
  22. 165
  23. 120
  24. 7884
  25. 54
  26. 32
  27. 256
  28. 61
  29. 60
  30. 60
  31. 70
  32. 32
  33. 11.26
  34. 1.7
  35. 8
  36. 84
  37. 24
  38. 6.2
  39. 39.5
  40. 10000

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