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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 847 · 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.Three temple bells ring every 4, 18 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  2. 2.2/3 − 5/10 =
  3. 3.4 × (18 − 4) + 30 ÷ 3 =
  4. 4.Find the HCF of 14 and 16.
  5. 5.If 6 notebooks cost ₹348, how much do 10 notebooks cost (in ₹)?
  6. 6.Round 52.92 to one decimal place. =
  7. 7.Find the third proportional to 3 and 9 (that is, 3 : 9 = 9 : ?).
  8. 8.The ratio of boys to girls in a class is 1 : 2. There are 9 boys. How many girls are there?
  9. 9.2 : 14 = 12 : ?
  10. 10.Find the LCM of 8, 2 and 3.
  11. 11.What is the smallest number you must add to 687 so that it divides exactly by 7?
  12. 12.Which is closest to 396 × 68? (Round each number first.) (a) 2800 (b) 280000 (c) 56000 (d) 28000
  13. 13.70 ÷ 7 × 5 + 4 =
  14. 14.Which of these numbers divides exactly by 6? (a) 1520 (b) 3048 (c) 6235 (d) 3231
  15. 15.7 : 12 = 63 : ?
  16. 16.Ishaan scored 36 marks out of 40 in a test. What percentage did Ishaan score?
  17. 17.A car goes 57 km on 3 litres of petrol. How far can it go on 26 litres (in km)?
  18. 18.Three temple bells ring every 6, 4 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  19. 19.Find the smallest number bigger than 6 that leaves a remainder of 1 when divided by 5, 4 or 6.
  20. 20.Find the HCF of 35 and 40.
  21. 21.Three temple bells ring every 8, 9 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  22. 22.Two tanks hold 120 litres and 90 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  23. 23.Find the LCM of 8 and 12.
  24. 24.Kavya takes 36 seconds and Saanvi takes 90 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?
  25. 25.Write 3/5 as a percent.
  26. 26.Round 35603 to the nearest thousand.
  27. 27.19 − 18 ÷ 9 × 6 =
  28. 28.A hall floor is 210 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  29. 29.The HCF of two numbers is 2 and their LCM is 24. One of the numbers is 8. What is the other number?
  30. 30.Find the LCM of 15 and 20.
  31. 31.Find the third proportional to 5 and 10 (that is, 5 : 10 = 10 : ?).
  32. 32.11 : 6 = 77 : ?
  33. 33.What is the smallest number you must take away from 425 so that it divides exactly by 8?
  34. 34.5/6 of 54 + 9 × 4 =
  35. 35.Write 1/2 as a percent.
  36. 36.Which is closest to 100 + 505 + 500? (a) 1100 (b) 1000 (c) 1300 (d) 1200
  37. 37.What is 5/8 of 200 students?
  38. 38.28 ÷ 4 × 4 + 10 =
  39. 39.Find the HCF of 49 and 42.
  40. 40.Which of these numbers divides exactly by 8? (a) 1848 (b) 5346 (c) 1252 (d) 3751

Answer key

  1. 36
  2. 1/6
  3. 66
  4. 2
  5. 580
  6. 52.9
  7. 27
  8. 18
  9. 84
  10. 24
  11. 6
  12. 28000
  13. 54
  14. 3048
  15. 108
  16. 90
  17. 494
  18. 36
  19. 61
  20. 5
  21. 72
  22. 30
  23. 24
  24. 180
  25. 60
  26. 36000
  27. 7
  28. 28
  29. 6
  30. 60
  31. 20
  32. 42
  33. 1
  34. 81
  35. 50
  36. 1100
  37. 125
  38. 38
  39. 7
  40. 1848

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