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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 259 · 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.Which is closest to 902 + 200 + 796? (a) 2100 (b) 2000 (c) 1800 (d) 1900
  2. 2.Find the LCM of 21 and 18.
  3. 3.Two tanks hold 10 litres and 35 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  4. 4.Write 3/10 as a percent.
  5. 5.The ratio of boys to girls in a class is 3 : 7. There are 6 boys. How many girls are there?
  6. 6.Which is closest to 993 ÷ 21? (a) 25 (b) 500 (c) 100 (d) 50
  7. 7.If 6 cricket balls cost ₹204, how much do 20 cricket balls cost (in ₹)?
  8. 8.Which is closest to 2005 ÷ 41? (a) 25 (b) 50 (c) 500 (d) 100
  9. 9.11 : 8 = 22 : ?
  10. 10.1/3 + 6/9 =
  11. 11.What is the smallest number you must take away from 164 so that it divides exactly by 6?
  12. 12.27 ÷ 3 × 7 + 7 =
  13. 13.Which of these numbers divides exactly by 6? (a) 3637 (b) 3627 (c) 3463 (d) 4266
  14. 14.Find the LCM of 15, 4 and 9.
  15. 15.Find the third proportional to 6 and 30 (that is, 6 : 30 = 30 : ?).
  16. 16.A hall floor is 100 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  17. 17.What is the smallest number you must add to 305 so that it divides exactly by 9?
  18. 18.Divide ₹91 between Ananya and Karan in the ratio 4 : 9. How much does Ananya get (in ₹)?
  19. 19.What is the smallest number you must take away from 642 so that it divides exactly by 7?
  20. 20.14 ÷ 7 × 7 + 10 =
  21. 21.1/3 of 18 + 6 × 9 =
  22. 22.A hall floor is 420 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  23. 23.If 5 kg of rice costs ₹180, how many kg can you buy for ₹324?
  24. 24.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?
  25. 25.Which of these numbers divides exactly by 9? (a) 6551 (b) 4087 (c) 3492 (d) 2635
  26. 26.Find the HCF of 60 and 135.
  27. 27.A car goes 48 km on 4 litres of petrol. How far can it go on 35 litres (in km)?
  28. 28.6.6 × 2 =
  29. 29.2/4 − 3/10 =
  30. 30.Divide ₹154 between Sneha and Meera in the ratio 7 : 4. How much does Meera get (in ₹)?
  31. 31.9.4 × 9 =
  32. 32.What is the smallest number you must take away from 387 so that it divides exactly by 8?
  33. 33.Find the LCM of 8, 7 and 4.
  34. 34.Find the LCM of 25 and 30.
  35. 35.A car goes 144 km on 12 litres of petrol. How far can it go on 38 litres (in km)?
  36. 36.10 : 8 = 60 : ?
  37. 37.9 × (24 − 15) + 18 ÷ 3 =
  38. 38.If 11 erasers cost ₹132, how much do 6 erasers cost (in ₹)?
  39. 39.What percent of 25 is 17?
  40. 40.10.8 ÷ 4 =

Answer key

  1. 1900
  2. 126
  3. 5
  4. 30
  5. 14
  6. 50
  7. 680
  8. 50
  9. 16
  10. 1
  11. 2
  12. 70
  13. 4266
  14. 180
  15. 150
  16. 15
  17. 1
  18. 28
  19. 5
  20. 24
  21. 60
  22. 14
  23. 9
  24. 24
  25. 3492
  26. 15
  27. 420
  28. 13.2
  29. 1/5
  30. 56
  31. 84.6
  32. 3
  33. 56
  34. 150
  35. 456
  36. 48
  37. 87
  38. 72
  39. 68
  40. 2.7

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