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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 830 · 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.What is the smallest number you must add to 551 so that it divides exactly by 3?
  2. 2.If 3 kg of rice costs ₹201, how many kg can you buy for ₹402?
  3. 3.Find the LCM of 14, 5 and 2.
  4. 4.What is 10% of 250?
  5. 5.5/6 + 8/12 =
  6. 6.Round 31682 to the nearest hundred.
  7. 7.The HCF of two numbers is 3 and their LCM is 168. One of the numbers is 21. What is the other number?
  8. 8.The ratio of boys to girls in a class is 5 : 9. There are 25 boys. How many girls are there?
  9. 9.What is the smallest number you must take away from 560 so that it divides exactly by 11?
  10. 10.How many factors does 37 have?
  11. 11.If 2 kites cost ₹70, how much do 15 kites cost (in ₹)?
  12. 12.A car goes 65 km on 5 litres of petrol. How far can it go on 22 litres (in km)?
  13. 13.Ishaan scored 18 marks out of 40 in a test. What percentage did Ishaan score?
  14. 14.40 + 8 × 2 − 28 =
  15. 15.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 15, 12 or 4.
  16. 16.3/5 × 5/10 =
  17. 17.24 ÷ 3 × 8 + 7 =
  18. 18.Find the third proportional to 2 and 10 (that is, 2 : 10 = 10 : ?).
  19. 19.Three temple bells ring every 18, 24 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  20. 20.What is the smallest number you must add to 355 so that it divides exactly by 8?
  21. 21.The ratio of boys to girls in a class is 6 : 5. There are 60 boys. How many girls are there?
  22. 22.4 : 3 = 36 : ?
  23. 23.Farhan scored 4 marks out of 50 in a test. What percentage did Farhan score?
  24. 24.What is 1/3 of 90 litres?
  25. 25.54.6 ÷ 6 =
  26. 26.3 painters can paint a school in 6 days. How many days would 2 painters take, working at the same speed?
  27. 27.A hall floor is 360 cm long and 135 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  28. 28.Round 92645 to the nearest hundred.
  29. 29.Two tanks hold 10 litres and 15 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  30. 30.Which of these numbers divides exactly by 4? (a) 1401 (b) 8684 (c) 4246 (d) 1378
  31. 31.Which of these numbers divides exactly by 9? (a) 2763 (b) 3347 (c) 7305 (d) 1771
  32. 32.Three temple bells ring every 18, 9 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  33. 33.A car goes 96 km on 12 litres of petrol. How far can it go on 5 litres (in km)?
  34. 34.How many factors does 22 have?
  35. 35.How many factors does 64 have?
  36. 36.Rohan takes 36 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?
  37. 37.Find the LCM of 6 and 15.
  38. 38.What is 1/3 of 36 students?
  39. 39.Find the HCF of 96 and 84.
  40. 40.What is the smallest number you must add to 161 so that it divides exactly by 13?

Answer key

  1. 1
  2. 6
  3. 70
  4. 25
  5. 3/2
  6. 31700
  7. 24
  8. 45
  9. 10
  10. 2
  11. 525
  12. 286
  13. 45
  14. 28
  15. 61
  16. 3/10
  17. 71
  18. 50
  19. 72
  20. 5
  21. 50
  22. 27
  23. 8
  24. 30
  25. 9.1
  26. 9
  27. 24
  28. 92600
  29. 5
  30. 8684
  31. 2763
  32. 90
  33. 40
  34. 4
  35. 7
  36. 180
  37. 30
  38. 12
  39. 12
  40. 8

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