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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 433 · 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. 1.20 + 11 × 10 − 12 =
  2. 2.Two tanks hold 270 litres and 120 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  3. 3.If 7 kg of rice costs ₹224, how many kg can you buy for ₹288?
  4. 4.6.8 × 5 =
  5. 5.A car goes 96 km on 4 litres of petrol. How far can it go on 32 litres (in km)?
  6. 6.Find the LCM of 6 and 8.
  7. 7.9 : 6 = 45 : ?
  8. 8.Saanvi takes 80 seconds and Farhan takes 36 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?
  9. 9.1/4 + 3/10 =
  10. 10.If 6 kg of rice costs ₹282, how many kg can you buy for ₹564?
  11. 11.A hall floor is 315 cm long and 135 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  12. 12.41 + 12 × 5 − 29 =
  13. 13.27 + 3 × 5 − 20 =
  14. 14.If 9 kg of rice costs ₹333, how many kg can you buy for ₹259?
  15. 15.What is the smallest number you must add to 267 so that it divides exactly by 9?
  16. 16.Find the third proportional to 8 and 32 (that is, 8 : 32 = 32 : ?).
  17. 17.3 painters can paint a school in 10 days. How many days would 6 painters take, working at the same speed?
  18. 18.What percent of 200 is 174?
  19. 19.66 ÷ 6 × 5 + 30 =
  20. 20.4 : 9 = 32 : ?
  21. 21.32 ÷ 8 × 3 + 9 =
  22. 22.8/12 × 5/11 =
  23. 23.150% of a number is 825. What is the number?
  24. 24.Find the third proportional to 9 and 45 (that is, 9 : 45 = 45 : ?).
  25. 25.(5 + 12) × 6 − 15 =
  26. 26.Which is closest to 303 × 61? (Round each number first.) (a) 18000 (b) 36000 (c) 1800 (d) 180000
  27. 27.Divide ₹224 between Dev and Kabir in the ratio 7 : 9. How much does Kabir get (in ₹)?
  28. 28.Which of these numbers divides exactly by 9? (a) 7171 (b) 1368 (c) 7240 (d) 1940
  29. 29.5/6 × 8/10 =
  30. 30.30% of a number is 15. What is the number?
  31. 31.If 12 notebooks cost ₹432, how much do 11 notebooks cost (in ₹)?
  32. 32.What is 75% of 224?
  33. 33.18 ÷ 9 × 2 + 25 =
  34. 34.Two tanks hold 15 litres and 20 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  35. 35.What is the smallest number you must take away from 523 so that it divides exactly by 9?
  36. 36.38 − 12 ÷ 4 × 9 =
  37. 37.A car goes 165 km on 11 litres of petrol. How far can it go on 3 litres (in km)?
  38. 38.1/2 of 24 + 4 × 2 =
  39. 39.5 painters can paint a school in 17 days. How many days would 17 painters take, working at the same speed?
  40. 40.Write 1/20 as a percent.

Answer key

  1. 118
  2. 30
  3. 9
  4. 34
  5. 768
  6. 24
  7. 30
  8. 720
  9. 11/20
  10. 12
  11. 21
  12. 72
  13. 22
  14. 7
  15. 3
  16. 128
  17. 5
  18. 87
  19. 85
  20. 72
  21. 21
  22. 10/33
  23. 550
  24. 225
  25. 87
  26. 18000
  27. 126
  28. 1368
  29. 2/3
  30. 50
  31. 396
  32. 168
  33. 29
  34. 5
  35. 1
  36. 11
  37. 45
  38. 20
  39. 5
  40. 5

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