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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 739 · 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. 1.1/2 of 12 + 8 × 6 =
  2. 2.Find the LCM of 20 and 28.
  3. 3.12% of a number is 54. What is the number?
  4. 4.What percent of 50 is 10?
  5. 5.Dev takes 50 seconds and Zoya 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?
  6. 6.Two tanks hold 360 litres and 320 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  7. 7.The ratio of boys to girls in a class is 6 : 1. There are 60 boys. How many girls are there?
  8. 8.The ratio of boys to girls in a class is 1 : 4. There are 4 boys. How many girls are there?
  9. 9.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 3, 8 or 15.
  10. 10.Find the LCM of 3, 5 and 11.
  11. 11.What is the smallest number you must add to 328 so that it divides exactly by 11?
  12. 12.The ratio of boys to girls in a class is 3 : 1. There are 30 boys. How many girls are there?
  13. 13.Find the LCM of 2, 4 and 13.
  14. 14.Find the HCF of 40 and 25.
  15. 15.If 9 mangoes cost ₹27, how much do 4 mangoes cost (in ₹)?
  16. 16.Find the LCM of 15 and 9.
  17. 17.If 9 kg of rice costs ₹792, how many kg can you buy for ₹176?
  18. 18.Find the LCM of 14, 9 and 6.
  19. 19.If 3 mangoes cost ₹108, how much do 20 mangoes cost (in ₹)?
  20. 20.Find the LCM of 15, 5 and 8.
  21. 21.A car goes 108 km on 12 litres of petrol. How far can it go on 5 litres (in km)?
  22. 22.What percent of 80 is 40?
  23. 23.What is 3/10 of 220 litres?
  24. 24.Which is closest to 303 + 599 + 903? (a) 1900 (b) 1700 (c) 1800 (d) 2000
  25. 25.Three temple bells ring every 8, 4 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  26. 26.3/5 − 4/12 =
  27. 27.What percent of 500 is 35?
  28. 28.Round 93.61 to one decimal place. =
  29. 29.What percent of 80 is 20?
  30. 30.(19 + 7) × 4 − 6 =
  31. 31.If 11 notebooks cost ₹132, how much do 15 notebooks cost (in ₹)?
  32. 32.Which is closest to 502 × 79? (Round each number first.) (a) 4000 (b) 400000 (c) 40000 (d) 80000
  33. 33.If 4 kg of rice costs ₹148, how many kg can you buy for ₹296?
  34. 34.A car goes 210 km on 10 litres of petrol. How far can it go on 12 litres (in km)?
  35. 35.4/8 − 1/9 =
  36. 36.A car goes 171 km on 9 litres of petrol. How far can it go on 25 litres (in km)?
  37. 37.What is 6/7 of 182 students?
  38. 38.4 × (13 − 4) + 60 ÷ 6 =
  39. 39.Which of these numbers divides exactly by 6? (a) 5238 (b) 1503 (c) 2054 (d) 4373
  40. 40.A hall floor is 240 cm long and 210 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?

Answer key

  1. 54
  2. 140
  3. 450
  4. 20
  5. 450
  6. 40
  7. 10
  8. 16
  9. 122
  10. 165
  11. 2
  12. 10
  13. 52
  14. 5
  15. 12
  16. 45
  17. 2
  18. 126
  19. 720
  20. 120
  21. 45
  22. 50
  23. 66
  24. 1800
  25. 40
  26. 4/15
  27. 7
  28. 93.6
  29. 25
  30. 98
  31. 180
  32. 40000
  33. 8
  34. 252
  35. 7/18
  36. 475
  37. 156
  38. 46
  39. 5238
  40. 56

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