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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 764 · 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 is closest to 298 + 798 + 399? (a) 1600 (b) 1400 (c) 1700 (d) 1500
  2. 2.What is the smallest number you must add to 451 so that it divides exactly by 3?
  3. 3.Find the LCM of 3, 8 and 9.
  4. 4.11 painters can paint a school in 26 days. How many days would 22 painters take, working at the same speed?
  5. 5.Find the HCF of 10 and 35.
  6. 6.What percent of 20 is 3?
  7. 7.61 − 12 ÷ 4 × 9 =
  8. 8.Find the LCM of 8, 7 and 2.
  9. 9.(15 + 6) × 6 − 18 =
  10. 10.A hall floor is 200 cm long and 75 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  11. 11.How many factors does 21 have?
  12. 12.Divide ₹77 between Ananya and Rohan in the ratio 2 : 9. How much does Ananya get (in ₹)?
  13. 13.How many factors does 76 have?
  14. 14.Which of these numbers divides exactly by 4? (a) 1514 (b) 2839 (c) 6553 (d) 4644
  15. 15.Find the HCF of 20 and 36.
  16. 16.If 2 notebooks cost ₹36, how much do 16 notebooks cost (in ₹)?
  17. 17.Find the LCM of 10, 14 and 15.
  18. 18.11 : 8 = 22 : ?
  19. 19.Divide ₹598 between Farhan and Kabir in the ratio 6 : 7. How much does Kabir get (in ₹)?
  20. 20.Find the LCM of 5, 15 and 6.
  21. 21.What is the smallest number you must add to 344 so that it divides exactly by 11?
  22. 22.What is the smallest number you must take away from 922 so that it divides exactly by 11?
  23. 23.Find the HCF of 30 and 42.
  24. 24.6/8 − 3/12 =
  25. 25.The ratio of boys to girls in a class is 3 : 7. There are 21 boys. How many girls are there?
  26. 26.What is the smallest number you must add to 367 so that it divides exactly by 3?
  27. 27.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 15, 8 or 12.
  28. 28.Priya takes 48 seconds and Aditya takes 54 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?
  29. 29.Which of these numbers divides exactly by 11? (a) 2025 (b) 1357 (c) 5797 (d) 3073
  30. 30.A car goes 18 km on 2 litres of petrol. How far can it go on 29 litres (in km)?
  31. 31.What is 3/4 of 28 kg?
  32. 32.Which is closest to 2701 ÷ 31? (a) 90 (b) 45 (c) 180 (d) 900
  33. 33.Divide ₹440 between Saanvi and Kavya in the ratio 1 : 7. How much does Kavya get (in ₹)?
  34. 34.50 + 3 × 11 − 9 =
  35. 35.What is 5% of 520?
  36. 36.Find the LCM of 12, 9 and 2.
  37. 37.Three temple bells ring every 20, 8 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  38. 38.If 5 pencil boxes cost ₹275, how much do 16 pencil boxes cost (in ₹)?
  39. 39.(19 + 7) × 4 − 21 =
  40. 40.A hall floor is 240 cm long and 200 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?

Answer key

  1. 1500
  2. 2
  3. 72
  4. 13
  5. 5
  6. 15
  7. 34
  8. 56
  9. 108
  10. 24
  11. 4
  12. 14
  13. 6
  14. 4644
  15. 4
  16. 288
  17. 210
  18. 16
  19. 322
  20. 30
  21. 8
  22. 9
  23. 6
  24. 1/2
  25. 49
  26. 2
  27. 122
  28. 432
  29. 5797
  30. 261
  31. 21
  32. 90
  33. 385
  34. 74
  35. 26
  36. 36
  37. 120
  38. 880
  39. 83
  40. 30

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