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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 530 · 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.Three temple bells ring every 18, 6 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  2. 2.12 painters can paint a school in 6 days. How many days would 9 painters take, working at the same speed?
  3. 3.A hall floor is 160 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  4. 4.Find the LCM of 15 and 25.
  5. 5.The HCF of two numbers is 7 and their LCM is 70. One of the numbers is 14. What is the other number?
  6. 6.Find the LCM of 35 and 15.
  7. 7.3/8 of 24 + 7 × 2 =
  8. 8.Find the LCM of 20 and 32.
  9. 9.A hall floor is 480 cm long and 420 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  10. 10.Which is closest to 2397 ÷ 41? (a) 600 (b) 60 (c) 120 (d) 30
  11. 11.(15 + 5) × 3 − 23 =
  12. 12.Three temple bells ring every 6, 5 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  13. 13.Find the LCM of 4 and 3.
  14. 14.16.4 ÷ 2 =
  15. 15.Write 1/2 as a percent.
  16. 16.Find the third proportional to 2 and 4 (that is, 2 : 4 = 4 : ?).
  17. 17.34.3 ÷ 7 =
  18. 18.How many factors does 64 have?
  19. 19.2/6 × 7/8 =
  20. 20.Which is closest to 504 + 496 + 403? (a) 1300 (b) 1600 (c) 1500 (d) 1400
  21. 21.Write 4/5 as a percent.
  22. 22.The HCF of two numbers is 9 and their LCM is 360. One of the numbers is 72. What is the other number?
  23. 23.A hall floor is 160 cm long and 140 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  24. 24.The ratio of boys to girls in a class is 5 : 8. There are 30 boys. How many girls are there?
  25. 25.96 ÷ 8 × 2 + 8 =
  26. 26.Find the LCM of 16 and 12.
  27. 27.Three temple bells ring every 12, 9 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  28. 28.Find the smallest number bigger than 10 that leaves a remainder of 2 when divided by 10, 4 or 9.
  29. 29.6 × (23 − 22) + 45 ÷ 5 =
  30. 30.Pooja takes 60 seconds and Isha 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?
  31. 31.What is the smallest number you must add to 839 so that it divides exactly by 11?
  32. 32.7.6 × 4 =
  33. 33.49 − 35 ÷ 7 × 9 =
  34. 34.Ishaan takes 90 seconds and Karan 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?
  35. 35.Find the LCM of 3, 14 and 6.
  36. 36.2/9 of 36 + 2 × 9 =
  37. 37.Divide ₹288 between Farhan and Priya in the ratio 1 : 5. How much does Farhan get (in ₹)?
  38. 38.2 × (14 − 12) + 21 ÷ 7 =
  39. 39.Find the third proportional to 6 and 24 (that is, 6 : 24 = 24 : ?).
  40. 40.A car goes 207 km on 9 litres of petrol. How far can it go on 21 litres (in km)?

Answer key

  1. 72
  2. 8
  3. 12
  4. 75
  5. 35
  6. 105
  7. 23
  8. 160
  9. 56
  10. 60
  11. 37
  12. 60
  13. 12
  14. 8.2
  15. 50
  16. 8
  17. 4.9
  18. 7
  19. 7/24
  20. 1400
  21. 80
  22. 45
  23. 56
  24. 48
  25. 32
  26. 48
  27. 36
  28. 182
  29. 15
  30. 180
  31. 8
  32. 30.4
  33. 4
  34. 720
  35. 42
  36. 26
  37. 48
  38. 7
  39. 96
  40. 483

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