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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 624 · 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.Which of these numbers divides exactly by 3? (a) 3624 (b) 1139 (c) 2107 (d) 5938
  2. 2.Find the LCM of 2, 8 and 11.
  3. 3.The HCF of two numbers is 6 and their LCM is 252. One of the numbers is 36. What is the other number?
  4. 4.What is the smallest number you must take away from 782 so that it divides exactly by 6?
  5. 5.Find the LCM of 8, 10 and 15.
  6. 6.Nisha scored 42 marks out of 50 in a test. What percentage did Nisha score?
  7. 7.What is 7/9 of 225 litres?
  8. 8.Two tanks hold 135 litres and 315 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  9. 9.Find the HCF of 30 and 42.
  10. 10.Which of these numbers divides exactly by 4? (a) 2973 (b) 3656 (c) 7762 (d) 2858
  11. 11.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?
  12. 12.A hall floor is 360 cm long and 300 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  13. 13.60% of a number is 351. What is the number?
  14. 14.7 painters can paint a school in 30 days. How many days would 5 painters take, working at the same speed?
  15. 15.What is 25% of 60?
  16. 16.1/6 + 4/10 =
  17. 17.2.94 + 8.2 =
  18. 18.Find the HCF of 56 and 98.
  19. 19.Find the HCF of 10 and 18.
  20. 20.Write 1/10 as a percent.
  21. 21.Find the HCF of 20 and 36.
  22. 22.Write 19/20 as a percent.
  23. 23.How many factors does 25 have?
  24. 24.What is 1/3 of 81 litres?
  25. 25.What percent of 250 is 5?
  26. 26.If 5 pencil boxes cost ₹190, how much do 19 pencil boxes cost (in ₹)?
  27. 27.The HCF of two numbers is 6 and their LCM is 180. One of the numbers is 36. What is the other number?
  28. 28.Divide ₹407 between Arjun and Kabir in the ratio 6 : 5. How much does Arjun get (in ₹)?
  29. 29.If 3 kg of rice costs ₹93, how many kg can you buy for ₹155?
  30. 30.If 2 cricket balls cost ₹48, how much do 15 cricket balls cost (in ₹)?
  31. 31.If 3 kg of rice costs ₹111, how many kg can you buy for ₹185?
  32. 32.Find the LCM of 10 and 15.
  33. 33.3/9 + 1/10 =
  34. 34.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 12, 4 or 6.
  35. 35.What is the smallest number you must add to 821 so that it divides exactly by 7?
  36. 36.A hall floor is 125 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  37. 37.Isha takes 54 seconds and Ishaan 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?
  38. 38.Find the HCF of 75 and 90.
  39. 39.Write 4/5 as a percent.
  40. 40.The HCF of two numbers is 4 and their LCM is 144. One of the numbers is 16. What is the other number?

Answer key

  1. 3624
  2. 88
  3. 42
  4. 2
  5. 120
  6. 84
  7. 175
  8. 45
  9. 6
  10. 3656
  11. 21
  12. 30
  13. 585
  14. 42
  15. 15
  16. 17/30
  17. 11.14
  18. 14
  19. 2
  20. 10
  21. 4
  22. 95
  23. 3
  24. 27
  25. 2
  26. 722
  27. 30
  28. 222
  29. 5
  30. 360
  31. 5
  32. 30
  33. 13/30
  34. 14
  35. 5
  36. 20
  37. 270
  38. 15
  39. 80
  40. 36

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