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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 358 · 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 21 and 6.
  2. 2.A hall floor is 420 cm long and 180 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  3. 3.Vivaan scored 5 marks out of 20 in a test. What percentage did Vivaan score?
  4. 4.A car goes 154 km on 11 litres of petrol. How far can it go on 2 litres (in km)?
  5. 5.6/10 − 2/8 =
  6. 6.Nisha takes 45 seconds and Aarav 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?
  7. 7.18.9 ÷ 9 =
  8. 8.What is the smallest number you must add to 414 so that it divides exactly by 13?
  9. 9.What is the smallest number you must add to 214 so that it divides exactly by 7?
  10. 10.Two tanks hold 320 litres and 280 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  11. 11.A hostel has enough food for 2 students for 9 days. How many days will the same food last for 6 students?
  12. 12.A car goes 180 km on 12 litres of petrol. How far can it go on 6 litres (in km)?
  13. 13.8 × (30 − 27) + 16 ÷ 4 =
  14. 14.What is 15% of 460?
  15. 15.How many factors does 92 have?
  16. 16.Which is closest to 4003 ÷ 51? (a) 80 (b) 160 (c) 40 (d) 800
  17. 17.93 − 16 ÷ 2 × 7 =
  18. 18.8 painters can paint a school in 21 days. How many days would 12 painters take, working at the same speed?
  19. 19.6 : 5 = 12 : ?
  20. 20.23.1 ÷ 7 =
  21. 21.Three temple bells ring every 6, 9 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  22. 22.Find the HCF of 21 and 15.
  23. 23.A hall floor is 480 cm long and 180 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  24. 24.Find the LCM of 9, 2 and 6.
  25. 25.The HCF of two numbers is 4 and their LCM is 160. One of the numbers is 20. What is the other number?
  26. 26.What is 30% of 150?
  27. 27.10/12 − 3/7 =
  28. 28.14 ÷ 7 × 9 + 11 =
  29. 29.Which is closest to 792 ÷ 39? (a) 40 (b) 200 (c) 20 (d) 10
  30. 30.Three temple bells ring every 6, 5 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  31. 31.Divide ₹222 between Dev and Manav in the ratio 5 : 1. How much does Manav get (in ₹)?
  32. 32.A car goes 32 km on 4 litres of petrol. How far can it go on 31 litres (in km)?
  33. 33.The ratio of boys to girls in a class is 6 : 7. There are 12 boys. How many girls are there?
  34. 34.Find the LCM of 13, 4 and 12.
  35. 35.Find the HCF of 28 and 16.
  36. 36.What is 40% of 80?
  37. 37.Divide ₹90 between Kavya and Aarav in the ratio 7 : 2. How much does Aarav get (in ₹)?
  38. 38.Three temple bells ring every 6, 18 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  39. 39.A hostel has enough food for 9 students for 13 days. How many days will the same food last for 13 students?
  40. 40.Rahul takes 40 seconds and Pooja takes 72 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?

Answer key

  1. 42
  2. 21
  3. 25
  4. 28
  5. 7/20
  6. 360
  7. 2.1
  8. 2
  9. 3
  10. 40
  11. 3
  12. 90
  13. 28
  14. 69
  15. 6
  16. 80
  17. 37
  18. 14
  19. 10
  20. 3.3
  21. 90
  22. 3
  23. 24
  24. 18
  25. 32
  26. 45
  27. 17/42
  28. 29
  29. 20
  30. 120
  31. 37
  32. 248
  33. 14
  34. 156
  35. 4
  36. 32
  37. 20
  38. 72
  39. 9
  40. 360

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