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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 875 · 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. 1.4/10 + 3/5 =
  2. 2.Find the LCM of 8, 5 and 12.
  3. 3.What is 5/8 of ₹128?
  4. 4.Find the third proportional to 6 and 12 (that is, 6 : 12 = 12 : ?).
  5. 5.Two tanks hold 315 litres and 270 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  6. 6.If 7 kg of rice costs ₹581, how many kg can you buy for ₹498?
  7. 7.37 − 12 ÷ 3 × 6 =
  8. 8.A car goes 75 km on 3 litres of petrol. How far can it go on 31 litres (in km)?
  9. 9.If 9 notebooks cost ₹180, how much do 4 notebooks cost (in ₹)?
  10. 10.A car goes 154 km on 7 litres of petrol. How far can it go on 31 litres (in km)?
  11. 11.Three temple bells ring every 8, 10 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  12. 12.9 ÷ 3 × 9 + 16 =
  13. 13.6/7 of 56 + 6 × 7 =
  14. 14.Which of these numbers divides exactly by 6? (a) 6353 (b) 9834 (c) 2944 (d) 8133
  15. 15.Isha takes 60 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?
  16. 16.A hall floor is 150 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  17. 17.39 − 42 ÷ 7 × 3 =
  18. 18.2 painters can paint a school in 22 days. How many days would 22 painters take, working at the same speed?
  19. 19.Divide ₹234 between Zoya and Priya in the ratio 5 : 1. How much does Zoya get (in ₹)?
  20. 20.11 : 9 = 22 : ?
  21. 21.1/2 − 1/9 =
  22. 22.If 9 kg of rice costs ₹621, how many kg can you buy for ₹483?
  23. 23.14 ÷ 2 × 7 + 27 =
  24. 24.Find the LCM of 8 and 9.
  25. 25.If 5 kg of rice costs ₹435, how many kg can you buy for ₹696?
  26. 26.(18 + 20) × 2 − 25 =
  27. 27.3/7 × 1/8 =
  28. 28.What is 30% of 60?
  29. 29.What is the smallest number you must add to 125 so that it divides exactly by 12?
  30. 30.75% of a number is 213. What is the number?
  31. 31.How many factors does 76 have?
  32. 32.Arjun takes 75 seconds and Farhan takes 60 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?
  33. 33.How many factors does 49 have?
  34. 34.A car goes 48 km on 4 litres of petrol. How far can it go on 38 litres (in km)?
  35. 35.Round 28.64 to one decimal place. =
  36. 36.6 : 15 = 30 : ?
  37. 37.Find the HCF of 12 and 10.
  38. 38.Zoya takes 80 seconds and Pooja takes 50 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?
  39. 39.The HCF of two numbers is 4 and their LCM is 140. One of the numbers is 28. What is the other number?
  40. 40.Find the third proportional to 8 and 24 (that is, 8 : 24 = 24 : ?).

Answer key

  1. 1
  2. 120
  3. 80
  4. 24
  5. 45
  6. 6
  7. 13
  8. 775
  9. 80
  10. 682
  11. 40
  12. 43
  13. 90
  14. 9834
  15. 240
  16. 10
  17. 21
  18. 2
  19. 195
  20. 18
  21. 7/18
  22. 7
  23. 76
  24. 72
  25. 8
  26. 51
  27. 3/56
  28. 18
  29. 7
  30. 284
  31. 6
  32. 300
  33. 3
  34. 456
  35. 28.6
  36. 75
  37. 2
  38. 400
  39. 20
  40. 72

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