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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 9 · 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.What is the smallest number you must take away from 382 so that it divides exactly by 9?
  2. 2.Two tanks hold 30 litres and 70 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  3. 3.6/10 + 4/5 =
  4. 4.Find the third proportional to 3 and 15 (that is, 3 : 15 = 15 : ?).
  5. 5.Find the HCF of 49 and 35.
  6. 6.Arjun takes 75 seconds and Isha 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?
  7. 7.How many factors does 14 have?
  8. 8.How many factors does 96 have?
  9. 9.5.26 + 1.5 =
  10. 10.Arjun scored 18 marks out of 50 in a test. What percentage did Arjun score?
  11. 11.Which of these numbers divides exactly by 3? (a) 1306 (b) 5102 (c) 6052 (d) 2133
  12. 12.Find the LCM of 7, 13 and 2.
  13. 13.If 8 cricket balls cost ₹96, how much do 5 cricket balls cost (in ₹)?
  14. 14.Round 41.67 to one decimal place. =
  15. 15.Two tanks hold 315 litres and 135 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  16. 16.34 + 7 × 7 − 18 =
  17. 17.Find the LCM of 6, 8 and 7.
  18. 18.What is 50% of 590?
  19. 19.9 : 12 = 18 : ?
  20. 20.How many factors does 38 have?
  21. 21.If 4 kg of rice costs ₹344, how many kg can you buy for ₹860?
  22. 22.Two tanks hold 20 litres and 50 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  23. 23.Which of these numbers divides exactly by 4? (a) 9401 (b) 1489 (c) 2219 (d) 2116
  24. 24.Two tanks hold 120 litres and 75 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  25. 25.What is the smallest number you must take away from 727 so that it divides exactly by 3?
  26. 26.5/8 − 1/3 =
  27. 27.Divide ₹221 between Arjun and Saanvi in the ratio 6 : 7. How much does Arjun get (in ₹)?
  28. 28.What is 1/3 of 15 km?
  29. 29.10.5 ÷ 3 =
  30. 30.1/2 × 3/6 =
  31. 31.9 : 5 = 54 : ?
  32. 32.If 6 kg of rice costs ₹186, how many kg can you buy for ₹124?
  33. 33.The ratio of boys to girls in a class is 9 : 7. There are 81 boys. How many girls are there?
  34. 34.Find the HCF of 39 and 104.
  35. 35.3 painters can paint a school in 26 days. How many days would 2 painters take, working at the same speed?
  36. 36.How many factors does 60 have?
  37. 37.Find the LCM of 30 and 42.
  38. 38.Which is closest to 1207 ÷ 41? (a) 300 (b) 15 (c) 30 (d) 60
  39. 39.What is 60% of 175?
  40. 40.Ishaan scored 56 marks out of 80 in a test. What percentage did Ishaan score?

Answer key

  1. 4
  2. 10
  3. 7/5
  4. 75
  5. 7
  6. 225
  7. 4
  8. 12
  9. 6.76
  10. 36
  11. 2133
  12. 182
  13. 60
  14. 41.7
  15. 45
  16. 65
  17. 168
  18. 295
  19. 24
  20. 4
  21. 10
  22. 10
  23. 2116
  24. 15
  25. 1
  26. 7/24
  27. 102
  28. 5
  29. 3.5
  30. 1/4
  31. 30
  32. 4
  33. 63
  34. 13
  35. 39
  36. 12
  37. 210
  38. 30
  39. 105
  40. 70

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