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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 799 · 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.How many factors does 86 have?
  2. 2.15 + 2 × 8 − 15 =
  3. 3.Kavya scored 12 marks out of 80 in a test. What percentage did Kavya score?
  4. 4.How many factors does 29 have?
  5. 5.4 : 14 = 12 : ?
  6. 6.The HCF of two numbers is 9 and their LCM is 126. One of the numbers is 18. What is the other number?
  7. 7.Divide ₹500 between Nisha and Dev in the ratio 9 : 1. How much does Dev get (in ₹)?
  8. 8.Two tanks hold 140 litres and 120 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  9. 9.Divide ₹480 between Isha and Arjun in the ratio 1 : 7. How much does Arjun get (in ₹)?
  10. 10.1.48 + 7.3 =
  11. 11.Two tanks hold 225 litres and 90 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  12. 12.How many factors does 66 have?
  13. 13.Diya scored 12 marks out of 20 in a test. What percentage did Diya score?
  14. 14.(18 + 10) × 4 − 13 =
  15. 15.Three temple bells ring every 15, 18 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  16. 16.Find the HCF of 36 and 24.
  17. 17.11 + 2 × 10 − 1 =
  18. 18.What is 4/5 of ₹15?
  19. 19.5.2 × 4 =
  20. 20.Find the HCF of 24 and 40.
  21. 21.2/7 + 8/10 =
  22. 22.Pooja takes 50 seconds and Manav 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?
  23. 23.Ishaan takes 30 seconds and Nisha takes 36 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?
  24. 24.Find the LCM of 6, 7 and 12.
  25. 25.Rahul takes 54 seconds and Karan takes 90 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?
  26. 26.2/3 + 2/5 =
  27. 27.How many factors does 50 have?
  28. 28.Two tanks hold 40 litres and 15 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  29. 29.Which of these numbers divides exactly by 9? (a) 9755 (b) 6702 (c) 3292 (d) 1854
  30. 30.Rahul takes 72 seconds and Ananya 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?
  31. 31.The HCF of two numbers is 7 and their LCM is 252. One of the numbers is 28. What is the other number?
  32. 32.How many factors does 82 have?
  33. 33.Two tanks hold 50 litres and 225 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  34. 34.84 ÷ 7 × 8 + 2 =
  35. 35.Two tanks hold 150 litres and 200 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  36. 36.Find the HCF of 14 and 12.
  37. 37.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 4, 8 or 15.
  38. 38.15% of a number is 21. What is the number?
  39. 39.7 : 10 = 63 : ?
  40. 40.Find the HCF of 108 and 24.

Answer key

  1. 4
  2. 16
  3. 15
  4. 2
  5. 42
  6. 63
  7. 50
  8. 20
  9. 420
  10. 8.78
  11. 45
  12. 8
  13. 60
  14. 99
  15. 90
  16. 12
  17. 30
  18. 12
  19. 20.8
  20. 8
  21. 38/35
  22. 200
  23. 180
  24. 84
  25. 270
  26. 16/15
  27. 6
  28. 5
  29. 1854
  30. 360
  31. 63
  32. 4
  33. 25
  34. 98
  35. 50
  36. 2
  37. 122
  38. 140
  39. 90
  40. 12

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