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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 485 · 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?

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  1. 1.Two tanks hold 200 litres and 360 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  2. 2.Write 21/50 as a percent.
  3. 3.5 × (17 − 9) + 8 ÷ 2 =
  4. 4.Write 1/2 as a percent.
  5. 5.1/2 of 18 + 2 × 9 =
  6. 6.Which is closest to 401 × 32? (Round each number first.) (a) 12000 (b) 1200 (c) 24000 (d) 120000
  7. 7.If 4 kg of rice costs ₹140, how many kg can you buy for ₹455?
  8. 8.Find the HCF of 24 and 56.
  9. 9.6 : 3 = 42 : ?
  10. 10.A hostel has enough food for 4 students for 30 days. How many days will the same food last for 3 students?
  11. 11.The HCF of two numbers is 7 and their LCM is 84. One of the numbers is 21. What is the other number?
  12. 12.Round 67011 to the nearest ten.
  13. 13.1/4 − 1/5 =
  14. 14.Find the LCM of 10, 3 and 9.
  15. 15.The ratio of boys to girls in a class is 9 : 8. There are 72 boys. How many girls are there?
  16. 16.Find the HCF of 99 and 88.
  17. 17.Round 3036 to the nearest ten.
  18. 18.Arjun scored 2 marks out of 20 in a test. What percentage did Arjun score?
  19. 19.What is 5% of 20?
  20. 20.Find the LCM of 25 and 35.
  21. 21.21.6 ÷ 3 =
  22. 22.A hall floor is 300 cm long and 180 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  23. 23.If 8 pencil boxes cost ₹336, how much do 12 pencil boxes cost (in ₹)?
  24. 24.3 painters can paint a school in 25 days. How many days would 15 painters take, working at the same speed?
  25. 25.Karan scored 24 marks out of 80 in a test. What percentage did Karan score?
  26. 26.Find the LCM of 6 and 15.
  27. 27.Which of these numbers divides exactly by 8? (a) 3856 (b) 9034 (c) 2214 (d) 6618
  28. 28.Divide ₹352 between Kabir and Arjun in the ratio 3 : 5. How much does Kabir get (in ₹)?
  29. 29.How many factors does 58 have?
  30. 30.Which of these numbers divides exactly by 3? (a) 1195 (b) 9628 (c) 4111 (d) 8013
  31. 31.Find the LCM of 35 and 25.
  32. 32.8 × (11 − 6) + 84 ÷ 7 =
  33. 33.What is 75% of 132?
  34. 34.Round 67546 to the nearest hundred.
  35. 35.Divide ₹185 between Tara and Arjun in the ratio 4 : 1. How much does Tara get (in ₹)?
  36. 36.If 6 kg of rice costs ₹444, how many kg can you buy for ₹740?
  37. 37.If 2 kg of rice costs ₹154, how many kg can you buy for ₹693?
  38. 38.If 5 kg of rice costs ₹325, how many kg can you buy for ₹260?
  39. 39.Priya takes 30 seconds and Meera takes 75 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?
  40. 40.The HCF of two numbers is 5 and their LCM is 180. One of the numbers is 20. What is the other number?

Answer key

  1. 40
  2. 42
  3. 44
  4. 50
  5. 27
  6. 12000
  7. 13
  8. 8
  9. 21
  10. 40
  11. 28
  12. 67010
  13. 1/20
  14. 90
  15. 64
  16. 11
  17. 3040
  18. 10
  19. 1
  20. 175
  21. 7.2
  22. 15
  23. 504
  24. 5
  25. 30
  26. 30
  27. 3856
  28. 132
  29. 4
  30. 8013
  31. 175
  32. 52
  33. 99
  34. 67500
  35. 148
  36. 10
  37. 9
  38. 4
  39. 150
  40. 45

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