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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 934 · 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.What is the smallest number you must add to 306 so that it divides exactly by 8?
  2. 2.7/8 of 32 + 3 × 4 =
  3. 3.4 : 14 = 32 : ?
  4. 4.If 7 erasers cost ₹196, how much do 13 erasers cost (in ₹)?
  5. 5.The HCF of two numbers is 8 and their LCM is 240. One of the numbers is 40. What is the other number?
  6. 6.Find the HCF of 55 and 66.
  7. 7.Find the LCM of 14 and 10.
  8. 8.If 5 kg of rice costs ₹400, how many kg can you buy for ₹960?
  9. 9.The HCF of two numbers is 2 and their LCM is 12. One of the numbers is 4. What is the other number?
  10. 10.Pooja scored 23 marks out of 25 in a test. What percentage did Pooja score?
  11. 11.How many factors does 61 have?
  12. 12.Divide ₹66 between Arjun and Ananya in the ratio 7 : 4. How much does Ananya get (in ₹)?
  13. 13.A hostel has enough food for 8 students for 19 days. How many days will the same food last for 19 students?
  14. 14.Find the LCM of 48 and 30.
  15. 15.If 2 bottles of juice cost ₹10, how much do 17 bottles of juice cost (in ₹)?
  16. 16.The ratio of boys to girls in a class is 2 : 5. There are 4 boys. How many girls are there?
  17. 17.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 8, 12 or 3.
  18. 18.A hall floor is 125 cm long and 50 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  19. 19.120% of a number is 468. What is the number?
  20. 20.Which of these numbers divides exactly by 11? (a) 6471 (b) 7385 (c) 8501 (d) 8459
  21. 21.A hall floor is 100 cm long and 80 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  22. 22.Find the HCF of 28 and 35.
  23. 23.Write 1/2 as a percent.
  24. 24.The HCF of two numbers is 8 and their LCM is 168. One of the numbers is 24. What is the other number?
  25. 25.Find the third proportional to 4 and 8 (that is, 4 : 8 = 8 : ?).
  26. 26.12 ÷ 6 × 4 + 1 =
  27. 27.10% of a number is 12. What is the number?
  28. 28.How many factors does 32 have?
  29. 29.6/9 + 3/11 =
  30. 30.(5 + 15) × 7 − 14 =
  31. 31.40 ÷ 5 × 5 + 24 =
  32. 32.Two tanks hold 90 litres and 240 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  33. 33.Find the HCF of 36 and 16.
  34. 34.Three temple bells ring every 20, 6 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  35. 35.Ishaan takes 30 seconds and Farhan takes 48 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?
  36. 36.Find the LCM of 24 and 20.
  37. 37.34.4 ÷ 8 =
  38. 38.How many factors does 52 have?
  39. 39.4 : 7 = 16 : ?
  40. 40.1/2 of 4 + 3 × 9 =

Answer key

  1. 6
  2. 40
  3. 112
  4. 364
  5. 48
  6. 11
  7. 70
  8. 12
  9. 6
  10. 92
  11. 2
  12. 24
  13. 8
  14. 240
  15. 85
  16. 10
  17. 25
  18. 10
  19. 390
  20. 8459
  21. 20
  22. 7
  23. 50
  24. 56
  25. 16
  26. 9
  27. 120
  28. 6
  29. 31/33
  30. 126
  31. 64
  32. 30
  33. 4
  34. 120
  35. 240
  36. 120
  37. 4.3
  38. 6
  39. 28
  40. 29

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