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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 375 · 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.Two tanks hold 90 litres and 75 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  2. 2.Which is closest to 296 + 505 + 97? (a) 1000 (b) 900 (c) 1100 (d) 800
  3. 3.A hall floor is 160 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  4. 4.If 2 notebooks cost ₹102, how much do 9 notebooks cost (in ₹)?
  5. 5.Find the third proportional to 8 and 24 (that is, 8 : 24 = 24 : ?).
  6. 6.What is 1/10 of 230 students?
  7. 7.1.93 + 6.2 =
  8. 8.Two tanks hold 60 litres and 75 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  9. 9.The ratio of boys to girls in a class is 2 : 7. There are 8 boys. How many girls are there?
  10. 10.6 : 8 = 12 : ?
  11. 11.8.81 + 1.8 =
  12. 12.5 × (10 − 5) + 36 ÷ 6 =
  13. 13.The ratio of boys to girls in a class is 9 : 8. There are 36 boys. How many girls are there?
  14. 14.9.96 + 4.9 =
  15. 15.Divide ₹84 between Ananya and Arjun in the ratio 3 : 4. How much does Ananya get (in ₹)?
  16. 16.Which is closest to 296 + 402 + 903? (a) 1700 (b) 1800 (c) 1600 (d) 1500
  17. 17.How many factors does 24 have?
  18. 18.Write 21/50 as a percent.
  19. 19.If 3 pencil boxes cost ₹66, how much do 9 pencil boxes cost (in ₹)?
  20. 20.The ratio of boys to girls in a class is 5 : 9. There are 35 boys. How many girls are there?
  21. 21.Find the LCM of 7, 14 and 12.
  22. 22.What is 25% of 592?
  23. 23.Divide ₹120 between Kabir and Arjun in the ratio 2 : 3. How much does Arjun get (in ₹)?
  24. 24.How many factors does 20 have?
  25. 25.If 8 bottles of juice cost ₹352, how much do 9 bottles of juice cost (in ₹)?
  26. 26.How many factors does 63 have?
  27. 27.Find the third proportional to 5 and 10 (that is, 5 : 10 = 10 : ?).
  28. 28.Which of these numbers divides exactly by 3? (a) 8210 (b) 1064 (c) 3596 (d) 7161
  29. 29.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 15, 5 or 4.
  30. 30.3/4 + 1/2 =
  31. 31.Find the HCF of 15 and 9.
  32. 32.Isha takes 60 seconds and Kabir takes 45 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. 33.50% of a number is 135. What is the number?
  34. 34.A car goes 30 km on 3 litres of petrol. How far can it go on 2 litres (in km)?
  35. 35.Round 75.61 to one decimal place. =
  36. 36.34 + 11 × 10 − 29 =
  37. 37.Divide ₹105 between Meera and Nisha in the ratio 2 : 5. How much does Nisha get (in ₹)?
  38. 38.2 painters can paint a school in 4 days. How many days would 4 painters take, working at the same speed?
  39. 39.Three temple bells ring every 9, 6 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  40. 40.11 : 3 = 99 : ?

Answer key

  1. 15
  2. 900
  3. 24
  4. 459
  5. 72
  6. 23
  7. 8.13
  8. 15
  9. 28
  10. 16
  11. 10.61
  12. 31
  13. 32
  14. 14.86
  15. 36
  16. 1600
  17. 8
  18. 42
  19. 198
  20. 63
  21. 84
  22. 148
  23. 72
  24. 6
  25. 396
  26. 6
  27. 20
  28. 7161
  29. 62
  30. 5/4
  31. 3
  32. 180
  33. 270
  34. 20
  35. 75.6
  36. 115
  37. 75
  38. 2
  39. 90
  40. 27

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