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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 641 · 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.How many factors does 94 have?
  2. 2.A car goes 180 km on 9 litres of petrol. How far can it go on 2 litres (in km)?
  3. 3.What is the smallest number you must take away from 787 so that it divides exactly by 12?
  4. 4.If 12 notebooks cost ₹600, how much do 14 notebooks cost (in ₹)?
  5. 5.Find the third proportional to 8 and 24 (that is, 8 : 24 = 24 : ?).
  6. 6.10 painters can paint a school in 19 days. How many days would 5 painters take, working at the same speed?
  7. 7.What percent of 250 is 175?
  8. 8.A hall floor is 140 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  9. 9.A hostel has enough food for 8 students for 18 days. How many days will the same food last for 18 students?
  10. 10.84 ÷ 7 × 2 + 7 =
  11. 11.The HCF of two numbers is 5 and their LCM is 280. One of the numbers is 40. What is the other number?
  12. 12.13 − 16 ÷ 8 × 2 =
  13. 13.6 : 11 = 12 : ?
  14. 14.Which is closest to 702 × 18? (Round each number first.) (a) 1400 (b) 14000 (c) 28000 (d) 140000
  15. 15.Two tanks hold 320 litres and 200 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  16. 16.6/8 + 2/7 =
  17. 17.Which is closest to 299 × 50? (Round each number first.) (a) 30000 (b) 150000 (c) 15000 (d) 1500
  18. 18.Divide ₹105 between Tara and Ishaan in the ratio 8 : 7. How much does Ishaan get (in ₹)?
  19. 19.Find the HCF of 63 and 18.
  20. 20.How many factors does 60 have?
  21. 21.Round 26.22 to one decimal place. =
  22. 22.A hall floor is 400 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  23. 23.A hall floor is 140 cm long and 40 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  24. 24.What is 25% of 408?
  25. 25.What is 20% of 130?
  26. 26.Find the LCM of 7, 4 and 10.
  27. 27.A hall floor is 210 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  28. 28.Find the smallest number bigger than 12 that leaves a remainder of 3 when divided by 10, 5 or 12.
  29. 29.4 painters can paint a school in 24 days. How many days would 16 painters take, working at the same speed?
  30. 30.A car goes 48 km on 2 litres of petrol. How far can it go on 27 litres (in km)?
  31. 31.How many factors does 67 have?
  32. 32.A car goes 60 km on 4 litres of petrol. How far can it go on 25 litres (in km)?
  33. 33.The HCF of two numbers is 6 and their LCM is 432. One of the numbers is 54. What is the other number?
  34. 34.5 × (26 − 1) + 6 ÷ 3 =
  35. 35.If 3 kg of rice costs ₹258, how many kg can you buy for ₹1118?
  36. 36.Find the third proportional to 8 and 16 (that is, 8 : 16 = 16 : ?).
  37. 37.Which is closest to 1501 ÷ 49? (a) 60 (b) 15 (c) 300 (d) 30
  38. 38.72 ÷ 9 × 8 + 15 =
  39. 39.What is 25% of 188?
  40. 40.Which of these numbers divides exactly by 9? (a) 8598 (b) 7346 (c) 9891 (d) 3337

Answer key

  1. 4
  2. 40
  3. 7
  4. 700
  5. 72
  6. 38
  7. 70
  8. 21
  9. 8
  10. 31
  11. 35
  12. 9
  13. 22
  14. 14000
  15. 40
  16. 29/28
  17. 15000
  18. 49
  19. 9
  20. 12
  21. 26.2
  22. 24
  23. 14
  24. 102
  25. 26
  26. 140
  27. 14
  28. 63
  29. 6
  30. 648
  31. 2
  32. 375
  33. 48
  34. 127
  35. 13
  36. 32
  37. 30
  38. 79
  39. 47
  40. 9891

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