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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 32 · 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.A car goes 112 km on 7 litres of petrol. How far can it go on 9 litres (in km)?
  2. 2.Three temple bells ring every 4, 8 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  3. 3.Find the LCM of 3, 4 and 14.
  4. 4.Which of these numbers divides exactly by 8? (a) 8008 (b) 4658 (c) 8083 (d) 2134
  5. 5.A car goes 16 km on 2 litres of petrol. How far can it go on 7 litres (in km)?
  6. 6.If 4 kg of rice costs ₹116, how many kg can you buy for ₹58?
  7. 7.Find the third proportional to 7 and 28 (that is, 7 : 28 = 28 : ?).
  8. 8.Find the HCF of 63 and 27.
  9. 9.Which of these numbers divides exactly by 9? (a) 6652 (b) 1014 (c) 1604 (d) 4734
  10. 10.The ratio of boys to girls in a class is 2 : 9. There are 14 boys. How many girls are there?
  11. 11.What is the smallest number you must add to 926 so that it divides exactly by 9?
  12. 12.3 painters can paint a school in 21 days. How many days would 21 painters take, working at the same speed?
  13. 13.Find the HCF of 9 and 24.
  14. 14.Three temple bells ring every 8, 24 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  15. 15.The ratio of boys to girls in a class is 8 : 1. There are 24 boys. How many girls are there?
  16. 16.Round 36.17 to one decimal place. =
  17. 17.What is the smallest number you must take away from 179 so that it divides exactly by 7?
  18. 18.The ratio of boys to girls in a class is 5 : 6. There are 35 boys. How many girls are there?
  19. 19.Which is closest to 3199 ÷ 41? (a) 800 (b) 160 (c) 40 (d) 80
  20. 20.What is the smallest number you must add to 305 so that it divides exactly by 3?
  21. 21.Which is closest to 1403 ÷ 19? (a) 70 (b) 700 (c) 140 (d) 35
  22. 22.Find the LCM of 6, 8 and 14.
  23. 23.Find the third proportional to 3 and 6 (that is, 3 : 6 = 6 : ?).
  24. 24.Find the LCM of 13, 6 and 2.
  25. 25.The HCF of two numbers is 5 and their LCM is 50. One of the numbers is 10. What is the other number?
  26. 26.How many factors does 89 have?
  27. 27.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?
  28. 28.48 + 7 × 4 − 33 =
  29. 29.Find the HCF of 4 and 18.
  30. 30.6 : 3 = 24 : ?
  31. 31.Round 75.51 to one decimal place. =
  32. 32.Karan scored 19 marks out of 25 in a test. What percentage did Karan score?
  33. 33.The ratio of boys to girls in a class is 7 : 9. There are 35 boys. How many girls are there?
  34. 34.Which of these numbers divides exactly by 8? (a) 8337 (b) 6207 (c) 3396 (d) 4624
  35. 35.17 + 11 × 4 − 12 =
  36. 36.1/7 of 21 + 5 × 8 =
  37. 37.Ananya takes 90 seconds and Aarav takes 80 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?
  38. 38.What percent of 500 is 280?
  39. 39.1/2 + 5/12 =
  40. 40.Round 48.72 to one decimal place. =

Answer key

  1. 144
  2. 120
  3. 84
  4. 8008
  5. 56
  6. 2
  7. 112
  8. 9
  9. 4734
  10. 63
  11. 1
  12. 3
  13. 3
  14. 72
  15. 3
  16. 36.2
  17. 4
  18. 42
  19. 80
  20. 1
  21. 70
  22. 168
  23. 12
  24. 78
  25. 25
  26. 2
  27. 120
  28. 43
  29. 2
  30. 12
  31. 75.5
  32. 76
  33. 45
  34. 4624
  35. 49
  36. 43
  37. 720
  38. 56
  39. 11/12
  40. 48.7

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