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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 636 · 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, 9 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  2. 2.A car goes 66 km on 6 litres of petrol. How far can it go on 33 litres (in km)?
  3. 3.What percent of 200 is 36?
  4. 4.12% of a number is 3. What is the number?
  5. 5.Which is closest to 501 + 105 + 203? (a) 700 (b) 1000 (c) 900 (d) 800
  6. 6.What percent of 20 is 11?
  7. 7.A car goes 120 km on 8 litres of petrol. How far can it go on 37 litres (in km)?
  8. 8.If 10 pens cost ₹430, how much do 7 pens cost (in ₹)?
  9. 9.Three temple bells ring every 4, 9 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  10. 10.Which is closest to 404 × 72? (Round each number first.) (a) 280000 (b) 28000 (c) 2800 (d) 56000
  11. 11.Three temple bells ring every 18, 12 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  12. 12.(2 + 2) × 2 − 6 =
  13. 13.Three temple bells ring every 5, 8 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  14. 14.1/7 × 2/6 =
  15. 15.Find the HCF of 24 and 36.
  16. 16.The ratio of boys to girls in a class is 3 : 7. There are 21 boys. How many girls are there?
  17. 17.(4 + 18) × 4 − 30 =
  18. 18.Find the LCM of 12, 4 and 5.
  19. 19.If 2 kg of rice costs ₹42, how many kg can you buy for ₹231?
  20. 20.Three temple bells ring every 5, 4 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  21. 21.The ratio of boys to girls in a class is 4 : 1. There are 12 boys. How many girls are there?
  22. 22.6 × (25 − 19) + 16 ÷ 8 =
  23. 23.35 ÷ 7 × 6 + 26 =
  24. 24.7/9 − 3/8 =
  25. 25.4 : 8 = 12 : ?
  26. 26.Round 7827 to the nearest hundred.
  27. 27.What is 30% of 290?
  28. 28.If 3 kg of rice costs ₹207, how many kg can you buy for ₹345?
  29. 29.4.17 + 7.9 =
  30. 30.54 − 18 ÷ 6 × 5 =
  31. 31.36 + 3 × 4 − 18 =
  32. 32.A hall floor is 120 cm long and 80 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  33. 33.2 : 8 = 10 : ?
  34. 34.Which of these numbers divides exactly by 4? (a) 2953 (b) 9772 (c) 5045 (d) 7953
  35. 35.Write 9/20 as a percent.
  36. 36.Which of these numbers divides exactly by 6? (a) 2968 (b) 7927 (c) 5520 (d) 9433
  37. 37.What is the smallest number you must add to 981 so that it divides exactly by 12?
  38. 38.2/7 + 1/3 =
  39. 39.1/5 + 6/12 =
  40. 40.Find the LCM of 3, 11 and 4.

Answer key

  1. 36
  2. 363
  3. 18
  4. 25
  5. 800
  6. 55
  7. 555
  8. 301
  9. 72
  10. 28000
  11. 36
  12. 2
  13. 120
  14. 1/21
  15. 12
  16. 49
  17. 58
  18. 60
  19. 11
  20. 60
  21. 3
  22. 38
  23. 56
  24. 29/72
  25. 24
  26. 7800
  27. 87
  28. 5
  29. 12.07
  30. 39
  31. 30
  32. 6
  33. 40
  34. 9772
  35. 45
  36. 5520
  37. 3
  38. 13/21
  39. 7/10
  40. 132

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