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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 26 · 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 LCM of 7, 6 and 12.
  2. 2.If 8 kg of rice costs ₹408, how many kg can you buy for ₹306?
  3. 3.A hall floor is 200 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  4. 4.The HCF of two numbers is 5 and their LCM is 315. One of the numbers is 45. What is the other number?
  5. 5.If 7 kg of rice costs ₹203, how many kg can you buy for ₹232?
  6. 6.24 ÷ 3 × 2 + 14 =
  7. 7.Round 66.62 to one decimal place. =
  8. 8.What is the smallest number you must add to 174 so that it divides exactly by 12?
  9. 9.2.88 + 2.6 =
  10. 10.(12 + 7) × 7 − 20 =
  11. 11.The HCF of two numbers is 4 and their LCM is 96. One of the numbers is 12. What is the other number?
  12. 12.Round 36486 to the nearest hundred.
  13. 13.7.87 + 3.2 =
  14. 14.3.1 × 4 =
  15. 15.If 6 kg of rice costs ₹426, how many kg can you buy for ₹923?
  16. 16.How many factors does 30 have?
  17. 17.Farhan takes 90 seconds and Pooja 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?
  18. 18.Which is closest to 599 + 502 + 197? (a) 1500 (b) 1400 (c) 1300 (d) 1200
  19. 19.The ratio of boys to girls in a class is 5 : 7. There are 25 boys. How many girls are there?
  20. 20.Find the LCM of 16 and 10.
  21. 21.Which is closest to 704 + 204 + 95? (a) 1100 (b) 900 (c) 1200 (d) 1000
  22. 22.What is the smallest number you must take away from 722 so that it divides exactly by 7?
  23. 23.How many factors does 83 have?
  24. 24.Isha takes 40 seconds and Tara takes 45 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?
  25. 25.5/9 − 1/3 =
  26. 26.Kavya takes 72 seconds and Priya takes 80 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?
  27. 27.Sneha scored 16 marks out of 20 in a test. What percentage did Sneha score?
  28. 28.Two tanks hold 75 litres and 200 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  29. 29.7/12 × 1/2 =
  30. 30.3 × (20 − 1) + 16 ÷ 4 =
  31. 31.15 ÷ 5 × 7 + 9 =
  32. 32.Find the LCM of 2 and 5.
  33. 33.Find the HCF of 77 and 33.
  34. 34.Three temple bells ring every 18, 10 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  35. 35.7/12 − 1/6 =
  36. 36.12 painters can paint a school in 17 days. How many days would 17 painters take, working at the same speed?
  37. 37.What is 20% of 310?
  38. 38.9.6 × 3 =
  39. 39.Find the LCM of 2, 3 and 10.
  40. 40.A hall floor is 350 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?

Answer key

  1. 84
  2. 6
  3. 12
  4. 35
  5. 8
  6. 30
  7. 66.6
  8. 6
  9. 5.48
  10. 113
  11. 32
  12. 36500
  13. 11.07
  14. 12.4
  15. 13
  16. 8
  17. 270
  18. 1300
  19. 35
  20. 80
  21. 1000
  22. 1
  23. 2
  24. 360
  25. 2/9
  26. 720
  27. 80
  28. 25
  29. 7/24
  30. 61
  31. 30
  32. 10
  33. 11
  34. 90
  35. 5/12
  36. 12
  37. 62
  38. 28.8
  39. 30
  40. 21

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