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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 692 · 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. 1.6 painters can paint a school in 27 days. How many days would 3 painters take, working at the same speed?
  2. 2.Write 1/2 as a percent.
  3. 3.What is the smallest number you must add to 691 so that it divides exactly by 9?
  4. 4.Find the third proportional to 7 and 35 (that is, 7 : 35 = 35 : ?).
  5. 5.If 9 kg of rice costs ₹702, how many kg can you buy for ₹1092?
  6. 6.Which is closest to 908 ÷ 31? (a) 60 (b) 300 (c) 30 (d) 15
  7. 7.8 painters can paint a school in 20 days. How many days would 4 painters take, working at the same speed?
  8. 8.What is the smallest number you must add to 808 so that it divides exactly by 12?
  9. 9.4/5 − 1/9 =
  10. 10.What percent of 50 is 48?
  11. 11.7 painters can paint a school in 9 days. How many days would 9 painters take, working at the same speed?
  12. 12.Dev scored 4 marks out of 25 in a test. What percentage did Dev score?
  13. 13.How many factors does 51 have?
  14. 14.Find the third proportional to 7 and 14 (that is, 7 : 14 = 14 : ?).
  15. 15.12% of a number is 69. What is the number?
  16. 16.Round 80827 to the nearest ten.
  17. 17.The ratio of boys to girls in a class is 1 : 4. There are 5 boys. How many girls are there?
  18. 18.If 7 mangoes cost ₹343, how much do 9 mangoes cost (in ₹)?
  19. 19.Divide ₹1020 between Arjun and Farhan in the ratio 8 : 9. How much does Farhan get (in ₹)?
  20. 20.Nisha takes 60 seconds and Dev takes 75 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?
  21. 21.12 : 2 = 36 : ?
  22. 22.A hall floor is 320 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  23. 23.2/4 × 2/8 =
  24. 24.120% of a number is 510. What is the number?
  25. 25.63 ÷ 9 × 6 + 6 =
  26. 26.11 : 5 = 44 : ?
  27. 27.Three temple bells ring every 15, 10 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  28. 28.What is 40% of 110?
  29. 29.11 painters can paint a school in 27 days. How many days would 9 painters take, working at the same speed?
  30. 30.Which is closest to 400 + 298 + 504? (a) 1200 (b) 1100 (c) 1400 (d) 1300
  31. 31.What is the smallest number you must take away from 978 so that it divides exactly by 4?
  32. 32.Find the HCF of 6 and 9.
  33. 33.What is 15% of 220?
  34. 34.Rahul scored 28 marks out of 80 in a test. What percentage did Rahul score?
  35. 35.How many factors does 61 have?
  36. 36.Find the third proportional to 3 and 6 (that is, 3 : 6 = 6 : ?).
  37. 37.If 12 pens cost ₹444, how much do 4 pens cost (in ₹)?
  38. 38.32 − 18 ÷ 2 × 2 =
  39. 39.Find the LCM of 6 and 21.
  40. 40.Three temple bells ring every 12, 30 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?

Answer key

  1. 54
  2. 50
  3. 2
  4. 175
  5. 14
  6. 30
  7. 40
  8. 8
  9. 31/45
  10. 96
  11. 7
  12. 16
  13. 4
  14. 28
  15. 575
  16. 80830
  17. 20
  18. 441
  19. 540
  20. 300
  21. 6
  22. 24
  23. 1/8
  24. 425
  25. 48
  26. 20
  27. 30
  28. 44
  29. 33
  30. 1200
  31. 2
  32. 3
  33. 33
  34. 35
  35. 2
  36. 12
  37. 148
  38. 14
  39. 42
  40. 120

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