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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 480 · 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.Round 4866 to the nearest thousand.
  2. 2.Find the third proportional to 3 and 6 (that is, 3 : 6 = 6 : ?).
  3. 3.Which is closest to 2995 ÷ 49? (a) 30 (b) 600 (c) 120 (d) 60
  4. 4.66 − 72 ÷ 8 × 4 =
  5. 5.The HCF of two numbers is 4 and their LCM is 96. One of the numbers is 12. What is the other number?
  6. 6.The ratio of boys to girls in a class is 3 : 2. There are 30 boys. How many girls are there?
  7. 7.A car goes 184 km on 8 litres of petrol. How far can it go on 12 litres (in km)?
  8. 8.Round 23237 to the nearest ten.
  9. 9.What is 40% of 500?
  10. 10.Write 3/50 as a percent.
  11. 11.Find the LCM of 4, 11 and 6.
  12. 12.Which is closest to 896 + 396 + 305? (a) 1800 (b) 1500 (c) 1700 (d) 1600
  13. 13.Divide ₹72 between Manav and Rahul in the ratio 5 : 1. How much does Manav get (in ₹)?
  14. 14.Which is closest to 600 × 69? (Round each number first.) (a) 420000 (b) 84000 (c) 42000 (d) 4200
  15. 15.Find the HCF of 36 and 81.
  16. 16.If 8 kg of rice costs ₹160, how many kg can you buy for ₹180?
  17. 17.4/6 × 3/8 =
  18. 18.Find the LCM of 2, 14 and 6.
  19. 19.2/6 + 3/5 =
  20. 20.The ratio of boys to girls in a class is 2 : 1. There are 20 boys. How many girls are there?
  21. 21.4/5 − 1/7 =
  22. 22.3/8 of 56 + 4 × 9 =
  23. 23.1.5 × 8 =
  24. 24.The HCF of two numbers is 2 and their LCM is 84. One of the numbers is 12. What is the other number?
  25. 25.What percent of 200 is 168?
  26. 26.Which is closest to 598 × 42? (Round each number first.) (a) 240000 (b) 24000 (c) 2400 (d) 48000
  27. 27.Three temple bells ring every 15, 8 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  28. 28.Three temple bells ring every 30, 18 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  29. 29.Find the HCF of 30 and 40.
  30. 30.20% of a number is 60. What is the number?
  31. 31.Which of these numbers divides exactly by 4? (a) 9985 (b) 1311 (c) 5519 (d) 1048
  32. 32.How many factors does 14 have?
  33. 33.15.8 ÷ 2 =
  34. 34.How many factors does 35 have?
  35. 35.2 : 12 = 10 : ?
  36. 36.11 + 2 × 10 − 6 =
  37. 37.77 − 54 ÷ 6 × 6 =
  38. 38.7 × (19 − 8) + 9 ÷ 3 =
  39. 39.The ratio of boys to girls in a class is 1 : 9. There are 10 boys. How many girls are there?
  40. 40.Meera takes 60 seconds and Kavya 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?

Answer key

  1. 5000
  2. 12
  3. 60
  4. 30
  5. 32
  6. 20
  7. 276
  8. 23240
  9. 200
  10. 6
  11. 132
  12. 1600
  13. 60
  14. 42000
  15. 9
  16. 9
  17. 1/4
  18. 42
  19. 14/15
  20. 10
  21. 23/35
  22. 57
  23. 12
  24. 14
  25. 84
  26. 24000
  27. 120
  28. 90
  29. 10
  30. 300
  31. 1048
  32. 4
  33. 7.9
  34. 4
  35. 60
  36. 25
  37. 23
  38. 80
  39. 90
  40. 180

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