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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 659 · 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.Farhan takes 80 seconds and Kabir 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?
  2. 2.Find the HCF of 54 and 12.
  3. 3.77 − 18 ÷ 3 × 9 =
  4. 4.What is 12% of 50?
  5. 5.2.8 × 3 =
  6. 6.Zoya takes 45 seconds and Karan takes 30 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.Which is closest to 900 × 22? (Round each number first.) (a) 18000 (b) 180000 (c) 1800 (d) 36000
  8. 8.How many factors does 21 have?
  9. 9.What is 5% of 300?
  10. 10.The HCF of two numbers is 3 and their LCM is 18. One of the numbers is 9. What is the other number?
  11. 11.How many factors does 22 have?
  12. 12.What percent of 20 is 14?
  13. 13.What is the smallest number you must add to 983 so that it divides exactly by 9?
  14. 14.1/2 − 1/4 =
  15. 15.If 4 cricket balls cost ₹132, how much do 8 cricket balls cost (in ₹)?
  16. 16.Which is closest to 496 × 21? (Round each number first.) (a) 10000 (b) 20000 (c) 100000 (d) 1000
  17. 17.27 + 4 × 6 − 25 =
  18. 18.What percent of 40 is 28?
  19. 19.1/5 of 30 + 2 × 5 =
  20. 20.Divide ₹168 between Dev and Aarav in the ratio 7 : 1. How much does Aarav get (in ₹)?
  21. 21.Find the LCM of 2 and 7.
  22. 22.What is the smallest number you must add to 961 so that it divides exactly by 6?
  23. 23.Which is closest to 198 × 30? (Round each number first.) (a) 6000 (b) 60000 (c) 12000 (d) 600
  24. 24.What is 3/10 of 160 students?
  25. 25.If 10 bottles of juice cost ₹80, how much do 13 bottles of juice cost (in ₹)?
  26. 26.10 : 15 = 40 : ?
  27. 27.6 : 15 = 18 : ?
  28. 28.Divide ₹275 between Isha and Nisha in the ratio 5 : 6. How much does Isha get (in ₹)?
  29. 29.Three temple bells ring every 30, 6 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  30. 30.What is the smallest number you must add to 694 so that it divides exactly by 11?
  31. 31.6 : 8 = 12 : ?
  32. 32.Two tanks hold 30 litres and 45 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  33. 33.1/2 + 1/4 =
  34. 34.Which is closest to 603 + 505 + 705? (a) 1900 (b) 2000 (c) 1800 (d) 1700
  35. 35.7.5 × 3 =
  36. 36.Ishaan takes 54 seconds and Aditya takes 30 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?
  37. 37.Ishaan takes 30 seconds and Saanvi takes 80 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.What is 150% of 490?
  39. 39.Find the LCM of 10, 14 and 5.
  40. 40.If 4 mangoes cost ₹76, how much do 8 mangoes cost (in ₹)?

Answer key

  1. 240
  2. 6
  3. 23
  4. 6
  5. 8.4
  6. 90
  7. 18000
  8. 4
  9. 15
  10. 6
  11. 4
  12. 70
  13. 7
  14. 1/4
  15. 264
  16. 10000
  17. 26
  18. 70
  19. 16
  20. 21
  21. 14
  22. 5
  23. 6000
  24. 48
  25. 104
  26. 60
  27. 45
  28. 125
  29. 120
  30. 10
  31. 16
  32. 15
  33. 3/4
  34. 1800
  35. 22.5
  36. 270
  37. 240
  38. 735
  39. 70
  40. 152

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