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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 611 · 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 6? (a) 1614 (b) 4211 (c) 7523 (d) 5669
  2. 2.12 : 4 = 72 : ?
  3. 3.Find the third proportional to 5 and 10 (that is, 5 : 10 = 10 : ?).
  4. 4.Find the LCM of 16 and 14.
  5. 5.14 ÷ 2 × 9 + 1 =
  6. 6.Ananya scored 56 marks out of 80 in a test. What percentage did Ananya score?
  7. 7.Which is closest to 197 + 600 + 203? (a) 1100 (b) 900 (c) 1200 (d) 1000
  8. 8.Three temple bells ring every 12, 20 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  9. 9.What is the smallest number you must add to 128 so that it divides exactly by 6?
  10. 10.Find the HCF of 28 and 126.
  11. 11.1/7 + 3/6 =
  12. 12.If 3 kg of rice costs ₹168, how many kg can you buy for ₹616?
  13. 13.What is 1/4 of 100 kg?
  14. 14.What is 50% of 72?
  15. 15.The HCF of two numbers is 7 and their LCM is 98. One of the numbers is 49. What is the other number?
  16. 16.Pooja takes 54 seconds and Ishaan 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?
  17. 17.Rahul scored 8 marks out of 20 in a test. What percentage did Rahul score?
  18. 18.Which is closest to 798 ÷ 41? (a) 20 (b) 40 (c) 10 (d) 200
  19. 19.8 : 5 = 32 : ?
  20. 20.5/8 of 32 + 9 × 7 =
  21. 21.A hall floor is 240 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  22. 22.Priya takes 36 seconds and Farhan takes 60 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.Find the third proportional to 6 and 24 (that is, 6 : 24 = 24 : ?).
  24. 24.A hall floor is 150 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  25. 25.Which is closest to 699 × 91? (Round each number first.) (a) 630000 (b) 126000 (c) 6300 (d) 63000
  26. 26.Find the LCM of 35 and 15.
  27. 27.9/11 − 2/4 =
  28. 28.How many factors does 18 have?
  29. 29.How many factors does 21 have?
  30. 30.What is 3/4 of 108 litres?
  31. 31.How many factors does 34 have?
  32. 32.Find the LCM of 2, 8 and 12.
  33. 33.Which is closest to 298 × 21? (Round each number first.) (a) 60000 (b) 600 (c) 12000 (d) 6000
  34. 34.Write 1/2 as a percent.
  35. 35.If 3 notebooks cost ₹15, how much do 15 notebooks cost (in ₹)?
  36. 36.A hall floor is 120 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  37. 37.The HCF of two numbers is 9 and their LCM is 135. One of the numbers is 45. What is the other number?
  38. 38.8 : 10 = 72 : ?
  39. 39.Round 6253 to the nearest hundred.
  40. 40.Find the LCM of 14 and 8.

Answer key

  1. 1614
  2. 24
  3. 20
  4. 112
  5. 64
  6. 70
  7. 1000
  8. 60
  9. 4
  10. 14
  11. 9/14
  12. 11
  13. 25
  14. 36
  15. 14
  16. 108
  17. 40
  18. 20
  19. 20
  20. 83
  21. 24
  22. 180
  23. 96
  24. 15
  25. 63000
  26. 105
  27. 7/22
  28. 6
  29. 4
  30. 81
  31. 4
  32. 24
  33. 6000
  34. 50
  35. 75
  36. 12
  37. 27
  38. 90
  39. 6300
  40. 56

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