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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 465 · 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.A car goes 160 km on 10 litres of petrol. How far can it go on 11 litres (in km)?
  2. 2.Find the HCF of 8 and 36.
  3. 3.Find the third proportional to 3 and 9 (that is, 3 : 9 = 9 : ?).
  4. 4.Divide ₹44 between Ishaan and Rohan in the ratio 1 : 3. How much does Ishaan get (in ₹)?
  5. 5.What is 5/7 of 28 students?
  6. 6.3/10 + 4/5 =
  7. 7.Find the LCM of 14 and 4.
  8. 8.18.5 ÷ 5 =
  9. 9.What is the smallest number you must take away from 411 so that it divides exactly by 8?
  10. 10.What percent of 50 is 22?
  11. 11.Which is closest to 502 × 61? (Round each number first.) (a) 300000 (b) 30000 (c) 3000 (d) 60000
  12. 12.What is the smallest number you must add to 670 so that it divides exactly by 3?
  13. 13.Find the HCF of 96 and 36.
  14. 14.How many factors does 54 have?
  15. 15.What is the smallest number you must add to 913 so that it divides exactly by 12?
  16. 16.What is the smallest number you must take away from 467 so that it divides exactly by 3?
  17. 17.If 9 kg of rice costs ₹621, how many kg can you buy for ₹207?
  18. 18.10% of a number is 60. What is the number?
  19. 19.2/12 + 2/3 =
  20. 20.Which of these numbers divides exactly by 3? (a) 1136 (b) 9125 (c) 3486 (d) 6355
  21. 21.How many factors does 75 have?
  22. 22.40% of a number is 42. What is the number?
  23. 23.A hall floor is 100 cm long and 80 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  24. 24.How many factors does 76 have?
  25. 25.Pooja scored 15 marks out of 25 in a test. What percentage did Pooja score?
  26. 26.49 + 7 × 9 − 43 =
  27. 27.Find the third proportional to 4 and 16 (that is, 4 : 16 = 16 : ?).
  28. 28.What is the smallest number you must add to 391 so that it divides exactly by 6?
  29. 29.The ratio of boys to girls in a class is 3 : 7. There are 24 boys. How many girls are there?
  30. 30.Find the smallest number bigger than 10 that leaves a remainder of 3 when divided by 5, 10 or 6.
  31. 31.Which is closest to 296 + 401 + 703? (a) 1300 (b) 1600 (c) 1500 (d) 1400
  32. 32.Find the LCM of 2 and 3.
  33. 33.The ratio of boys to girls in a class is 8 : 7. There are 16 boys. How many girls are there?
  34. 34.1/3 of 33 + 9 × 3 =
  35. 35.Which is closest to 497 × 88? (Round each number first.) (a) 90000 (b) 4500 (c) 45000 (d) 450000
  36. 36.Which is closest to 799 ÷ 19? (a) 80 (b) 400 (c) 20 (d) 40
  37. 37.Find the LCM of 30 and 24.
  38. 38.What is the smallest number you must take away from 375 so that it divides exactly by 7?
  39. 39.(17 + 10) × 9 − 19 =
  40. 40.Kavya takes 36 seconds and Pooja 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?

Answer key

  1. 176
  2. 4
  3. 27
  4. 11
  5. 20
  6. 11/10
  7. 28
  8. 3.7
  9. 3
  10. 44
  11. 30000
  12. 2
  13. 12
  14. 8
  15. 11
  16. 2
  17. 3
  18. 600
  19. 5/6
  20. 3486
  21. 6
  22. 105
  23. 20
  24. 6
  25. 60
  26. 69
  27. 64
  28. 5
  29. 56
  30. 33
  31. 1400
  32. 6
  33. 14
  34. 38
  35. 45000
  36. 40
  37. 120
  38. 4
  39. 224
  40. 180

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