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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 939 · 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 HCF of 56 and 35.
  2. 2.Find the smallest number bigger than 8 that leaves a remainder of 2 when divided by 8, 3 or 6.
  3. 3.What is 1/8 of ₹208?
  4. 4.Find the LCM of 32 and 36.
  5. 5.What is 3/4 of 72 km?
  6. 6.Divide ₹450 between Tara and Aditya in the ratio 2 : 7. How much does Tara get (in ₹)?
  7. 7.Find the smallest number bigger than 10 that leaves a remainder of 2 when divided by 5, 3 or 10.
  8. 8.What is 10% of 390?
  9. 9.What percent of 25 is 19?
  10. 10.Three temple bells ring every 9, 24 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  11. 11.Round 24.73 to one decimal place. =
  12. 12.The HCF of two numbers is 2 and their LCM is 72. One of the numbers is 18. What is the other number?
  13. 13.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 10, 5 or 15.
  14. 14.The ratio of boys to girls in a class is 1 : 2. There are 6 boys. How many girls are there?
  15. 15.If 9 erasers cost ₹270, how much do 7 erasers cost (in ₹)?
  16. 16.9 : 2 = 63 : ?
  17. 17.Find the third proportional to 8 and 24 (that is, 8 : 24 = 24 : ?).
  18. 18.The ratio of boys to girls in a class is 7 : 5. There are 28 boys. How many girls are there?
  19. 19.Karan takes 75 seconds and Kabir takes 30 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?
  20. 20.Divide ₹119 between Kabir and Diya in the ratio 1 : 6. How much does Kabir get (in ₹)?
  21. 21.Three temple bells ring every 30, 24 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  22. 22.Two tanks hold 175 litres and 75 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  23. 23.3/4 of 16 + 9 × 7 =
  24. 24.Round 43069 to the nearest thousand.
  25. 25.If 7 kg of rice costs ₹455, how many kg can you buy for ₹195?
  26. 26.7 × (16 − 5) + 32 ÷ 8 =
  27. 27.If 2 kg of rice costs ₹54, how many kg can you buy for ₹108?
  28. 28.31 − 6 ÷ 2 × 9 =
  29. 29.1/2 + 2/10 =
  30. 30.Rohan scored 13 marks out of 50 in a test. What percentage did Rohan score?
  31. 31.5/9 − 1/12 =
  32. 32.A hall floor is 100 cm long and 80 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  33. 33.2.03 + 5.5 =
  34. 34.The ratio of boys to girls in a class is 2 : 5. There are 4 boys. How many girls are there?
  35. 35.Find the LCM of 7 and 8.
  36. 36.If 12 erasers cost ₹228, how much do 19 erasers cost (in ₹)?
  37. 37.The HCF of two numbers is 9 and their LCM is 405. One of the numbers is 45. What is the other number?
  38. 38.What is 5% of 520?
  39. 39.A car goes 52 km on 4 litres of petrol. How far can it go on 36 litres (in km)?
  40. 40.The ratio of boys to girls in a class is 8 : 5. There are 56 boys. How many girls are there?

Answer key

  1. 7
  2. 26
  3. 26
  4. 288
  5. 54
  6. 100
  7. 32
  8. 39
  9. 76
  10. 72
  11. 24.7
  12. 8
  13. 32
  14. 12
  15. 210
  16. 14
  17. 72
  18. 20
  19. 150
  20. 17
  21. 120
  22. 25
  23. 75
  24. 43000
  25. 3
  26. 81
  27. 4
  28. 4
  29. 7/10
  30. 26
  31. 17/36
  32. 20
  33. 7.53
  34. 10
  35. 56
  36. 361
  37. 81
  38. 26
  39. 468
  40. 35

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