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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 155 · 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.Divide ₹220 between Meera and Isha in the ratio 3 : 2. How much does Isha get (in ₹)?
  2. 2.Three temple bells ring every 8, 6 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  3. 3.A car goes 70 km on 7 litres of petrol. How far can it go on 17 litres (in km)?
  4. 4.3/7 of 35 + 5 × 8 =
  5. 5.Rahul takes 45 seconds and Priya takes 50 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?
  6. 6.Two tanks hold 180 litres and 140 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  7. 7.4.9 × 7 =
  8. 8.What percent of 20 is 1?
  9. 9.6/7 of 28 + 9 × 4 =
  10. 10.If 3 kites cost ₹45, how much do 13 kites cost (in ₹)?
  11. 11.A hostel has enough food for 3 students for 4 days. How many days will the same food last for 6 students?
  12. 12.46 + 11 × 7 − 37 =
  13. 13.7.5 × 8 =
  14. 14.Which is closest to 598 × 90? (Round each number first.) (a) 54000 (b) 540000 (c) 5400 (d) 108000
  15. 15.How many factors does 95 have?
  16. 16.Which is closest to 1006 ÷ 49? (a) 10 (b) 20 (c) 40 (d) 200
  17. 17.A hall floor is 350 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  18. 18.Find the LCM of 21 and 15.
  19. 19.Write 1/10 as a percent.
  20. 20.23.5 ÷ 5 =
  21. 21.Find the third proportional to 2 and 6 (that is, 2 : 6 = 6 : ?).
  22. 22.Two tanks hold 80 litres and 30 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  23. 23.9 × (22 − 17) + 16 ÷ 2 =
  24. 24.Kavya scored 16 marks out of 20 in a test. What percentage did Kavya score?
  25. 25.6/9 × 1/2 =
  26. 26.Find the LCM of 2, 12 and 4.
  27. 27.Round 86.52 to one decimal place. =
  28. 28.5/6 − 1/3 =
  29. 29.Three temple bells ring every 12, 5 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  30. 30.A hostel has enough food for 3 students for 24 days. How many days will the same food last for 24 students?
  31. 31.Which is closest to 401 × 80? (Round each number first.) (a) 32000 (b) 64000 (c) 320000 (d) 3200
  32. 32.Find the LCM of 3, 4 and 6.
  33. 33.Which of these numbers divides exactly by 4? (a) 8918 (b) 7118 (c) 7159 (d) 3728
  34. 34.The HCF of two numbers is 8 and their LCM is 48. One of the numbers is 16. What is the other number?
  35. 35.Three temple bells ring every 6, 5 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  36. 36.Diya takes 90 seconds and Sneha 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?
  37. 37.How many factors does 37 have?
  38. 38.Find the LCM of 15, 14 and 6.
  39. 39.What is 10% of 490?
  40. 40.Find the HCF of 42 and 70.

Answer key

  1. 88
  2. 120
  3. 170
  4. 55
  5. 450
  6. 20
  7. 34.3
  8. 5
  9. 60
  10. 195
  11. 2
  12. 86
  13. 60
  14. 54000
  15. 4
  16. 20
  17. 14
  18. 105
  19. 10
  20. 4.7
  21. 18
  22. 10
  23. 53
  24. 80
  25. 1/3
  26. 12
  27. 86.5
  28. 1/2
  29. 60
  30. 3
  31. 32000
  32. 12
  33. 3728
  34. 24
  35. 30
  36. 270
  37. 2
  38. 210
  39. 49
  40. 14

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