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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 133 · 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 150% of 484?
  2. 2.A car goes 126 km on 6 litres of petrol. How far can it go on 2 litres (in km)?
  3. 3.A car goes 91 km on 7 litres of petrol. How far can it go on 2 litres (in km)?
  4. 4.What is the smallest number you must add to 271 so that it divides exactly by 6?
  5. 5.How many factors does 76 have?
  6. 6.The HCF of two numbers is 3 and their LCM is 54. One of the numbers is 27. What is the other number?
  7. 7.4.65 + 5.8 =
  8. 8.What is the smallest number you must add to 994 so that it divides exactly by 3?
  9. 9.Saanvi takes 36 seconds and Dev takes 40 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?
  10. 10.Dev takes 45 seconds and Vivaan takes 40 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?
  11. 11.What is 2/5 of 40 km?
  12. 12.What percent of 20 is 6?
  13. 13.Find the LCM of 42 and 54.
  14. 14.The ratio of boys to girls in a class is 4 : 5. There are 40 boys. How many girls are there?
  15. 15.The ratio of boys to girls in a class is 3 : 8. There are 24 boys. How many girls are there?
  16. 16.What is 4/9 of ₹18?
  17. 17.Which of these numbers divides exactly by 9? (a) 9224 (b) 1388 (c) 2271 (d) 8037
  18. 18.Find the HCF of 60 and 50.
  19. 19.Find the LCM of 10, 7 and 3.
  20. 20.Find the HCF of 72 and 84.
  21. 21.If 8 pencil boxes cost ₹24, how much do 5 pencil boxes cost (in ₹)?
  22. 22.What is the smallest number you must add to 948 so that it divides exactly by 9?
  23. 23.What is the smallest number you must take away from 649 so that it divides exactly by 3?
  24. 24.Find the LCM of 54 and 24.
  25. 25.Which is closest to 203 × 38? (Round each number first.) (a) 800 (b) 8000 (c) 16000 (d) 80000
  26. 26.What is the smallest number you must take away from 849 so that it divides exactly by 8?
  27. 27.Priya scored 28 marks out of 40 in a test. What percentage did Priya score?
  28. 28.3/10 + 1/2 =
  29. 29.The ratio of boys to girls in a class is 8 : 3. There are 16 boys. How many girls are there?
  30. 30.4/5 − 3/8 =
  31. 31.4 painters can paint a school in 29 days. How many days would 2 painters take, working at the same speed?
  32. 32.Find the smallest number bigger than 10 that leaves a remainder of 2 when divided by 10, 3 or 9.
  33. 33.How many factors does 60 have?
  34. 34.Round 89.13 to one decimal place. =
  35. 35.Find the LCM of 18 and 14.
  36. 36.4 × (19 − 12) + 60 ÷ 5 =
  37. 37.28 − 24 ÷ 6 × 3 =
  38. 38.8 : 11 = 24 : ?
  39. 39.3/5 + 3/12 =
  40. 40.A car goes 36 km on 3 litres of petrol. How far can it go on 25 litres (in km)?

Answer key

  1. 726
  2. 42
  3. 26
  4. 5
  5. 6
  6. 6
  7. 10.45
  8. 2
  9. 360
  10. 360
  11. 16
  12. 30
  13. 378
  14. 50
  15. 64
  16. 8
  17. 8037
  18. 10
  19. 210
  20. 12
  21. 15
  22. 6
  23. 1
  24. 216
  25. 8000
  26. 1
  27. 70
  28. 4/5
  29. 6
  30. 17/40
  31. 58
  32. 92
  33. 12
  34. 89.1
  35. 126
  36. 40
  37. 16
  38. 33
  39. 17/20
  40. 300

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