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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 99 · 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 300 × 91? (Round each number first.) (a) 2700 (b) 54000 (c) 270000 (d) 27000
  2. 2.The HCF of two numbers is 8 and their LCM is 112. One of the numbers is 16. What is the other number?
  3. 3.What percent of 40 is 34?
  4. 4.If 10 pens cost ₹70, how much do 2 pens cost (in ₹)?
  5. 5.What is 7/10 of ₹200?
  6. 6.Find the third proportional to 2 and 4 (that is, 2 : 4 = 4 : ?).
  7. 7.14 + 11 × 12 − 6 =
  8. 8.Two tanks hold 50 litres and 225 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  9. 9.A car goes 184 km on 8 litres of petrol. How far can it go on 20 litres (in km)?
  10. 10.Two tanks hold 80 litres and 50 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  11. 11.What percent of 80 is 64?
  12. 12.Three temple bells ring every 18, 10 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  13. 13.If 7 kg of rice costs ₹420, how many kg can you buy for ₹120?
  14. 14.Find the LCM of 8, 3 and 4.
  15. 15.4.64 + 3.1 =
  16. 16.The ratio of boys to girls in a class is 3 : 1. There are 9 boys. How many girls are there?
  17. 17.Two tanks hold 50 litres and 80 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  18. 18.If 3 cricket balls cost ₹15, how much do 19 cricket balls cost (in ₹)?
  19. 19.The HCF of two numbers is 5 and their LCM is 360. One of the numbers is 45. What is the other number?
  20. 20.A car goes 32 km on 4 litres of petrol. How far can it go on 40 litres (in km)?
  21. 21.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 4, 10 or 12.
  22. 22.If 8 kg of rice costs ₹544, how many kg can you buy for ₹340?
  23. 23.7 × (15 − 4) + 8 ÷ 4 =
  24. 24.A car goes 45 km on 3 litres of petrol. How far can it go on 36 litres (in km)?
  25. 25.What is 2/3 of 24 kg?
  26. 26.Round 96.59 to one decimal place. =
  27. 27.If 6 pens cost ₹96, how much do 10 pens cost (in ₹)?
  28. 28.12 : 3 = 48 : ?
  29. 29.What is the smallest number you must take away from 394 so that it divides exactly by 9?
  30. 30.A car goes 36 km on 3 litres of petrol. How far can it go on 25 litres (in km)?
  31. 31.Find the HCF of 70 and 60.
  32. 32.If 4 cricket balls cost ₹224, how much do 12 cricket balls cost (in ₹)?
  33. 33.Aditya takes 30 seconds and Kavya takes 75 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.Isha takes 48 seconds and Arjun takes 36 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?
  35. 35.14.2 ÷ 2 =
  36. 36.4.8 × 4 =
  37. 37.What is 1/4 of ₹88?
  38. 38.7/10 + 2/4 =
  39. 39.Find the third proportional to 6 and 30 (that is, 6 : 30 = 30 : ?).
  40. 40.14.8 ÷ 4 =

Answer key

  1. 27000
  2. 56
  3. 85
  4. 14
  5. 140
  6. 8
  7. 140
  8. 25
  9. 460
  10. 10
  11. 80
  12. 90
  13. 2
  14. 24
  15. 7.74
  16. 3
  17. 10
  18. 95
  19. 40
  20. 320
  21. 62
  22. 5
  23. 79
  24. 540
  25. 16
  26. 96.6
  27. 160
  28. 12
  29. 7
  30. 300
  31. 10
  32. 672
  33. 150
  34. 144
  35. 7.1
  36. 19.2
  37. 22
  38. 6/5
  39. 150
  40. 3.7

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