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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 20 · 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.Find the LCM of 12 and 16.
  2. 2.How many factors does 43 have?
  3. 3.Find the smallest number bigger than 10 that leaves a remainder of 2 when divided by 6, 10 or 9.
  4. 4.Write 1/10 as a percent.
  5. 5.The ratio of boys to girls in a class is 2 : 7. There are 14 boys. How many girls are there?
  6. 6.Round 27011 to the nearest ten.
  7. 7.Find the third proportional to 6 and 30 (that is, 6 : 30 = 30 : ?).
  8. 8.If 11 cricket balls cost ₹539, how much do 6 cricket balls cost (in ₹)?
  9. 9.What is the smallest number you must add to 391 so that it divides exactly by 11?
  10. 10.If 5 kg of rice costs ₹155, how many kg can you buy for ₹248?
  11. 11.Find the LCM of 6 and 15.
  12. 12.A car goes 45 km on 5 litres of petrol. How far can it go on 39 litres (in km)?
  13. 13.If 9 kg of rice costs ₹297, how many kg can you buy for ₹264?
  14. 14.What percent of 20 is 7?
  15. 15.3.43 + 2.4 =
  16. 16.Isha takes 60 seconds and Karan takes 90 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?
  17. 17.How many factors does 74 have?
  18. 18.If 3 kg of rice costs ₹243, how many kg can you buy for ₹891?
  19. 19.3 painters can paint a school in 11 days. How many days would 11 painters take, working at the same speed?
  20. 20.1/3 × 7/12 =
  21. 21.Find the HCF of 90 and 75.
  22. 22.Find the smallest number bigger than 15 that leaves a remainder of 4 when divided by 15, 6 or 9.
  23. 23.Find the LCM of 20 and 28.
  24. 24.A hall floor is 150 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  25. 25.Two tanks hold 160 litres and 100 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  26. 26.A car goes 96 km on 8 litres of petrol. How far can it go on 11 litres (in km)?
  27. 27.5 × (10 − 9) + 32 ÷ 8 =
  28. 28.If 2 cricket balls cost ₹14, how much do 11 cricket balls cost (in ₹)?
  29. 29.Write 1/4 as a percent.
  30. 30.Vivaan takes 54 seconds and Nisha 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?
  31. 31.30 ÷ 6 × 4 + 4 =
  32. 32.A car goes 276 km on 12 litres of petrol. How far can it go on 7 litres (in km)?
  33. 33.Divide ₹120 between Zoya and Tara in the ratio 9 : 1. How much does Zoya get (in ₹)?
  34. 34.Which of these numbers divides exactly by 9? (a) 2416 (b) 5594 (c) 8368 (d) 1557
  35. 35.3/4 − 2/6 =
  36. 36.70 ÷ 7 × 8 + 7 =
  37. 37.Write 2/5 as a percent.
  38. 38.Divide ₹164 between Kabir and Farhan in the ratio 3 : 1. How much does Kabir get (in ₹)?
  39. 39.6 × (20 − 1) + 33 ÷ 3 =
  40. 40.What is the smallest number you must add to 867 so that it divides exactly by 6?

Answer key

  1. 48
  2. 2
  3. 92
  4. 10
  5. 49
  6. 27010
  7. 150
  8. 294
  9. 5
  10. 8
  11. 30
  12. 351
  13. 8
  14. 35
  15. 5.83
  16. 180
  17. 4
  18. 11
  19. 3
  20. 7/36
  21. 15
  22. 94
  23. 140
  24. 20
  25. 20
  26. 132
  27. 9
  28. 77
  29. 25
  30. 432
  31. 24
  32. 161
  33. 108
  34. 1557
  35. 5/12
  36. 87
  37. 40
  38. 123
  39. 125
  40. 3

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