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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 139 · 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. 1.6.3 × 4 =
  2. 2.The ratio of boys to girls in a class is 2 : 5. There are 16 boys. How many girls are there?
  3. 3.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 10, 9 or 4.
  4. 4.31 − 15 ÷ 3 × 6 =
  5. 5.What is the smallest number you must add to 725 so that it divides exactly by 4?
  6. 6.If 8 kg of rice costs ₹192, how many kg can you buy for ₹168?
  7. 7.Which is closest to 1495 ÷ 31? (a) 50 (b) 500 (c) 100 (d) 25
  8. 8.How many factors does 78 have?
  9. 9.The HCF of two numbers is 9 and their LCM is 54. One of the numbers is 27. What is the other number?
  10. 10.Which is closest to 296 × 58? (Round each number first.) (a) 36000 (b) 18000 (c) 180000 (d) 1800
  11. 11.Which is closest to 204 + 200 + 97? (a) 500 (b) 400 (c) 600 (d) 700
  12. 12.23 − 18 ÷ 6 × 7 =
  13. 13.What is 1/3 of 78 kg?
  14. 14.The ratio of boys to girls in a class is 3 : 8. There are 24 boys. How many girls are there?
  15. 15.5 : 7 = 25 : ?
  16. 16.Find the third proportional to 2 and 10 (that is, 2 : 10 = 10 : ?).
  17. 17.How many factors does 29 have?
  18. 18.20 ÷ 2 × 2 + 18 =
  19. 19.If 9 kg of rice costs ₹396, how many kg can you buy for ₹528?
  20. 20.9 ÷ 3 × 7 + 21 =
  21. 21.3/9 + 1/11 =
  22. 22.The HCF of two numbers is 3 and their LCM is 54. One of the numbers is 27. What is the other number?
  23. 23.What is 10% of 550?
  24. 24.If 9 pencil boxes cost ₹270, how much do 3 pencil boxes cost (in ₹)?
  25. 25.Find the LCM of 7, 4 and 6.
  26. 26.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 9, 12 or 10.
  27. 27.The HCF of two numbers is 9 and their LCM is 126. One of the numbers is 18. What is the other number?
  28. 28.Write 3/4 as a percent.
  29. 29.What is the smallest number you must take away from 519 so that it divides exactly by 8?
  30. 30.6 : 11 = 30 : ?
  31. 31.Find the HCF of 32 and 72.
  32. 32.Find the LCM of 20 and 15.
  33. 33.Find the LCM of 5, 4 and 10.
  34. 34.The HCF of two numbers is 7 and their LCM is 98. One of the numbers is 49. What is the other number?
  35. 35.A car goes 24 km on 2 litres of petrol. How far can it go on 10 litres (in km)?
  36. 36.What is 1/2 of 58 litres?
  37. 37.What is 120% of 350?
  38. 38.Round 58.87 to one decimal place. =
  39. 39.8/10 − 2/3 =
  40. 40.If 10 mangoes cost ₹250, how much do 19 mangoes cost (in ₹)?

Answer key

  1. 25.2
  2. 40
  3. 181
  4. 1
  5. 3
  6. 7
  7. 50
  8. 8
  9. 18
  10. 18000
  11. 500
  12. 2
  13. 26
  14. 64
  15. 35
  16. 50
  17. 2
  18. 38
  19. 12
  20. 42
  21. 14/33
  22. 6
  23. 55
  24. 90
  25. 84
  26. 181
  27. 63
  28. 75
  29. 7
  30. 55
  31. 8
  32. 60
  33. 20
  34. 14
  35. 120
  36. 29
  37. 420
  38. 58.9
  39. 2/15
  40. 475

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