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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 429 · 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.Find the smallest number bigger than 15 that leaves a remainder of 4 when divided by 8, 15 or 6.
  2. 2.3 : 15 = 9 : ?
  3. 3.Which is closest to 703 + 403 + 595? (a) 1800 (b) 1700 (c) 1600 (d) 1900
  4. 4.The ratio of boys to girls in a class is 8 : 9. There are 16 boys. How many girls are there?
  5. 5.Which of these numbers divides exactly by 8? (a) 1988 (b) 3830 (c) 1303 (d) 8024
  6. 6.Which is closest to 2996 ÷ 49? (a) 60 (b) 600 (c) 30 (d) 120
  7. 7.Find the HCF of 98 and 126.
  8. 8.What percent of 20 is 8?
  9. 9.Three temple bells ring every 9, 15 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  10. 10.Find the LCM of 13, 8 and 2.
  11. 11.Which of these numbers divides exactly by 11? (a) 1186 (b) 9801 (c) 7881 (d) 6045
  12. 12.Find the LCM of 13, 2 and 9.
  13. 13.A hall floor is 125 cm long and 75 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  14. 14.6/9 − 4/10 =
  15. 15.What is the smallest number you must add to 190 so that it divides exactly by 6?
  16. 16.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 3, 15 or 5.
  17. 17.7 × (30 − 14) + 40 ÷ 8 =
  18. 18.What percent of 200 is 142?
  19. 19.What percent of 50 is 25?
  20. 20.1/7 of 14 + 5 × 3 =
  21. 21.Three temple bells ring every 8, 4 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  22. 22.A car goes 77 km on 7 litres of petrol. How far can it go on 2 litres (in km)?
  23. 23.Rohan takes 50 seconds and Vivaan 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?
  24. 24.Three temple bells ring every 24, 9 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  25. 25.Write 31/50 as a percent.
  26. 26.Which is closest to 297 × 68? (Round each number first.) (a) 21000 (b) 210000 (c) 42000 (d) 2100
  27. 27.Find the HCF of 63 and 54.
  28. 28.The ratio of boys to girls in a class is 9 : 4. There are 72 boys. How many girls are there?
  29. 29.Round 89.86 to one decimal place. =
  30. 30.If 3 notebooks cost ₹150, how much do 18 notebooks cost (in ₹)?
  31. 31.How many factors does 88 have?
  32. 32.Two tanks hold 30 litres and 70 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  33. 33.Write 4/25 as a percent.
  34. 34.How many factors does 54 have?
  35. 35.Find the smallest number bigger than 9 that leaves a remainder of 3 when divided by 5, 9 or 4.
  36. 36.Which is closest to 398 × 78? (Round each number first.) (a) 3200 (b) 32000 (c) 64000 (d) 320000
  37. 37.A hostel has enough food for 3 students for 9 days. How many days will the same food last for 9 students?
  38. 38.What is the smallest number you must add to 815 so that it divides exactly by 9?
  39. 39.Find the LCM of 4, 13 and 3.
  40. 40.What is 60% of 600?

Answer key

  1. 124
  2. 45
  3. 1700
  4. 18
  5. 8024
  6. 60
  7. 14
  8. 40
  9. 45
  10. 104
  11. 9801
  12. 234
  13. 15
  14. 4/15
  15. 2
  16. 17
  17. 117
  18. 71
  19. 50
  20. 17
  21. 72
  22. 22
  23. 450
  24. 72
  25. 62
  26. 21000
  27. 9
  28. 32
  29. 89.9
  30. 900
  31. 8
  32. 10
  33. 16
  34. 8
  35. 183
  36. 32000
  37. 3
  38. 4
  39. 156
  40. 360

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