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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 850 · 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 percent of 40 is 22?
  2. 2.How many factors does 33 have?
  3. 3.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 9, 12 or 10.
  4. 4.49.5 ÷ 9 =
  5. 5.Divide ₹147 between Saanvi and Nisha in the ratio 1 : 2. How much does Saanvi get (in ₹)?
  6. 6.Round 62.93 to one decimal place. =
  7. 7.The ratio of boys to girls in a class is 2 : 3. There are 4 boys. How many girls are there?
  8. 8.(5 + 14) × 9 − 17 =
  9. 9.The HCF of two numbers is 9 and their LCM is 648. One of the numbers is 72. What is the other number?
  10. 10.7 : 4 = 49 : ?
  11. 11.6 : 2 = 54 : ?
  12. 12.A car goes 80 km on 4 litres of petrol. How far can it go on 8 litres (in km)?
  13. 13.Find the HCF of 45 and 54.
  14. 14.What is the smallest number you must add to 475 so that it divides exactly by 6?
  15. 15.Find the LCM of 10 and 4.
  16. 16.Divide ₹141 between Manav and Dev in the ratio 1 : 2. How much does Manav get (in ₹)?
  17. 17.The HCF of two numbers is 2 and their LCM is 28. One of the numbers is 4. What is the other number?
  18. 18.Find the LCM of 6, 3 and 11.
  19. 19.Two tanks hold 125 litres and 225 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  20. 20.16 + 9 × 7 − 14 =
  21. 21.Which is closest to 196 × 40? (Round each number first.) (a) 80000 (b) 16000 (c) 8000 (d) 800
  22. 22.3.5 × 2 =
  23. 23.What percent of 20 is 1?
  24. 24.Find the HCF of 6 and 10.
  25. 25.Two tanks hold 105 litres and 30 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  26. 26.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 9, 4 or 12.
  27. 27.Find the third proportional to 6 and 30 (that is, 6 : 30 = 30 : ?).
  28. 28.Find the HCF of 75 and 105.
  29. 29.15 + 5 × 5 − 6 =
  30. 30.What is the smallest number you must add to 181 so that it divides exactly by 9?
  31. 31.A hall floor is 200 cm long and 160 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  32. 32.How many factors does 82 have?
  33. 33.The HCF of two numbers is 3 and their LCM is 42. One of the numbers is 21. What is the other number?
  34. 34.Which is closest to 1205 ÷ 39? (a) 60 (b) 15 (c) 300 (d) 30
  35. 35.If 3 cricket balls cost ₹45, how much do 9 cricket balls cost (in ₹)?
  36. 36.12 + 7 × 7 − 7 =
  37. 37.Find the HCF of 20 and 35.
  38. 38.25 + 10 × 2 − 4 =
  39. 39.Three temple bells ring every 6, 10 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  40. 40.A car goes 110 km on 11 litres of petrol. How far can it go on 22 litres (in km)?

Answer key

  1. 55
  2. 4
  3. 182
  4. 5.5
  5. 49
  6. 62.9
  7. 6
  8. 154
  9. 81
  10. 28
  11. 18
  12. 160
  13. 9
  14. 5
  15. 20
  16. 47
  17. 14
  18. 66
  19. 25
  20. 65
  21. 8000
  22. 7
  23. 5
  24. 2
  25. 15
  26. 37
  27. 150
  28. 15
  29. 34
  30. 8
  31. 20
  32. 4
  33. 6
  34. 30
  35. 135
  36. 54
  37. 5
  38. 41
  39. 120
  40. 220

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