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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 757 · 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.A car goes 117 km on 9 litres of petrol. How far can it go on 15 litres (in km)?
  2. 2.Find the HCF of 105 and 75.
  3. 3.The ratio of boys to girls in a class is 3 : 5. There are 12 boys. How many girls are there?
  4. 4.Divide ₹55 between Arjun and Kavya in the ratio 3 : 2. How much does Kavya get (in ₹)?
  5. 5.What is 120% of 35?
  6. 6.The ratio of boys to girls in a class is 2 : 9. There are 4 boys. How many girls are there?
  7. 7.Pooja takes 36 seconds and Arjun takes 60 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?
  8. 8.3 : 15 = 6 : ?
  9. 9.If 12 pens cost ₹480, how much do 13 pens cost (in ₹)?
  10. 10.The HCF of two numbers is 2 and their LCM is 112. One of the numbers is 14. What is the other number?
  11. 11.5.1 × 3 =
  12. 12.Round 92426 to the nearest thousand.
  13. 13.What percent of 25 is 2?
  14. 14.A hall floor is 175 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  15. 15.How many factors does 38 have?
  16. 16.A car goes 121 km on 11 litres of petrol. How far can it go on 22 litres (in km)?
  17. 17.Which is closest to 297 + 698 + 595? (a) 1500 (b) 1800 (c) 1700 (d) 1600
  18. 18.Find the LCM of 18 and 24.
  19. 19.How many factors does 71 have?
  20. 20.30% of a number is 30. What is the number?
  21. 21.Which is closest to 797 + 904 + 497? (a) 2400 (b) 2300 (c) 2100 (d) 2200
  22. 22.Which is closest to 398 + 795 + 295? (a) 1600 (b) 1700 (c) 1400 (d) 1500
  23. 23.73 − 28 ÷ 4 × 5 =
  24. 24.Find the HCF of 49 and 35.
  25. 25.Which is closest to 402 × 18? (Round each number first.) (a) 16000 (b) 8000 (c) 80000 (d) 800
  26. 26.Find the LCM of 5, 9 and 15.
  27. 27.The HCF of two numbers is 8 and their LCM is 448. One of the numbers is 64. What is the other number?
  28. 28.2.92 + 4.7 =
  29. 29.A car goes 42 km on 2 litres of petrol. How far can it go on 34 litres (in km)?
  30. 30.What is the smallest number you must take away from 747 so that it divides exactly by 7?
  31. 31.The ratio of boys to girls in a class is 4 : 1. There are 12 boys. How many girls are there?
  32. 32.If 5 kg of rice costs ₹380, how many kg can you buy for ₹608?
  33. 33.Find the LCM of 5 and 2.
  34. 34.40% of a number is 78. What is the number?
  35. 35.Find the third proportional to 2 and 6 (that is, 2 : 6 = 6 : ?).
  36. 36.72 ÷ 6 × 9 + 30 =
  37. 37.(4 + 8) × 4 − 8 =
  38. 38.What is the smallest number you must take away from 215 so that it divides exactly by 13?
  39. 39.What is the smallest number you must take away from 170 so that it divides exactly by 13?
  40. 40.What is the smallest number you must take away from 566 so that it divides exactly by 11?

Answer key

  1. 195
  2. 15
  3. 20
  4. 22
  5. 42
  6. 18
  7. 180
  8. 30
  9. 520
  10. 16
  11. 15.3
  12. 92000
  13. 8
  14. 28
  15. 4
  16. 242
  17. 1600
  18. 72
  19. 2
  20. 100
  21. 2200
  22. 1500
  23. 38
  24. 7
  25. 8000
  26. 45
  27. 56
  28. 7.62
  29. 714
  30. 5
  31. 3
  32. 8
  33. 10
  34. 195
  35. 18
  36. 138
  37. 40
  38. 7
  39. 1
  40. 5

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