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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 614 · 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 36 km on 3 litres of petrol. How far can it go on 10 litres (in km)?
  2. 2.12 : 8 = 36 : ?
  3. 3.What is the smallest number you must take away from 513 so that it divides exactly by 4?
  4. 4.How many factors does 34 have?
  5. 5.Find the smallest number bigger than 5 that leaves a remainder of 2 when divided by 4, 5 or 3.
  6. 6.12 painters can paint a school in 15 days. How many days would 10 painters take, working at the same speed?
  7. 7.If 7 kg of rice costs ₹553, how many kg can you buy for ₹1185?
  8. 8.7/8 × 1/5 =
  9. 9.What is the smallest number you must take away from 187 so that it divides exactly by 6?
  10. 10.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 12, 4 or 9.
  11. 11.Find the third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
  12. 12.26.7 ÷ 3 =
  13. 13.Find the smallest number bigger than 8 that leaves a remainder of 3 when divided by 4, 8 or 6.
  14. 14.Write 2/5 as a percent.
  15. 15.24 ÷ 4 × 7 + 3 =
  16. 16.What percent of 50 is 19?
  17. 17.The ratio of boys to girls in a class is 2 : 1. There are 14 boys. How many girls are there?
  18. 18.120% of a number is 12. What is the number?
  19. 19.What is the smallest number you must add to 843 so that it divides exactly by 6?
  20. 20.Find the third proportional to 2 and 4 (that is, 2 : 4 = 4 : ?).
  21. 21.How many factors does 49 have?
  22. 22.Three temple bells ring every 24, 4 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  23. 23.If 4 kg of rice costs ₹328, how many kg can you buy for ₹656?
  24. 24.33 − 20 ÷ 5 × 4 =
  25. 25.Find the LCM of 5, 9 and 4.
  26. 26.Which is closest to 797 ÷ 39? (a) 10 (b) 20 (c) 40 (d) 200
  27. 27.7 × (25 − 18) + 8 ÷ 4 =
  28. 28.A hall floor is 140 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  29. 29.The HCF of two numbers is 6 and their LCM is 378. One of the numbers is 54. What is the other number?
  30. 30.150% of a number is 201. What is the number?
  31. 31.What is 40% of 350?
  32. 32.How many factors does 47 have?
  33. 33.Tara takes 54 seconds and Aditya 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?
  34. 34.Two tanks hold 405 litres and 360 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  35. 35.Three temple bells ring every 24, 9 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  36. 36.Round 85226 to the nearest ten.
  37. 37.A car goes 200 km on 10 litres of petrol. How far can it go on 18 litres (in km)?
  38. 38.9.81 + 8.7 =
  39. 39.10 + 5 × 2 − 10 =
  40. 40.The ratio of boys to girls in a class is 4 : 3. There are 32 boys. How many girls are there?

Answer key

  1. 120
  2. 24
  3. 1
  4. 4
  5. 62
  6. 18
  7. 15
  8. 7/40
  9. 1
  10. 37
  11. 32
  12. 8.9
  13. 27
  14. 40
  15. 45
  16. 38
  17. 7
  18. 10
  19. 3
  20. 8
  21. 3
  22. 120
  23. 8
  24. 17
  25. 180
  26. 20
  27. 51
  28. 21
  29. 42
  30. 134
  31. 140
  32. 2
  33. 432
  34. 45
  35. 72
  36. 85230
  37. 360
  38. 18.51
  39. 10
  40. 24

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