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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 962 · 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 103 so that it divides exactly by 3?
  2. 2.What is 40% of 115?
  3. 3.Which is closest to 399 + 595 + 799? (a) 1700 (b) 2000 (c) 1900 (d) 1800
  4. 4.A hostel has enough food for 9 students for 5 days. How many days will the same food last for 15 students?
  5. 5.If 7 kites cost ₹189, how much do 20 kites cost (in ₹)?
  6. 6.If 6 kg of rice costs ₹306, how many kg can you buy for ₹561?
  7. 7.Which is closest to 903 × 18? (Round each number first.) (a) 36000 (b) 18000 (c) 1800 (d) 180000
  8. 8.The ratio of boys to girls in a class is 1 : 5. There are 4 boys. How many girls are there?
  9. 9.What is 10% of 100?
  10. 10.Find the third proportional to 5 and 15 (that is, 5 : 15 = 15 : ?).
  11. 11.Find the third proportional to 8 and 24 (that is, 8 : 24 = 24 : ?).
  12. 12.Which is closest to 200 × 18? (Round each number first.) (a) 8000 (b) 400 (c) 4000 (d) 40000
  13. 13.Which is closest to 796 × 78? (Round each number first.) (a) 128000 (b) 64000 (c) 640000 (d) 6400
  14. 14.12 : 14 = 36 : ?
  15. 15.What percent of 20 is 7?
  16. 16.4.5 × 2 =
  17. 17.A hostel has enough food for 7 students for 28 days. How many days will the same food last for 4 students?
  18. 18.What is the smallest number you must take away from 337 so that it divides exactly by 7?
  19. 19.Find the HCF of 20 and 35.
  20. 20.11 painters can paint a school in 13 days. How many days would 13 painters take, working at the same speed?
  21. 21.Find the LCM of 5 and 8.
  22. 22.Which of these numbers divides exactly by 3? (a) 7721 (b) 1032 (c) 4420 (d) 7369
  23. 23.5.6 × 8 =
  24. 24.What is 2/3 of 90 km?
  25. 25.What percent of 50 is 12?
  26. 26.Divide ₹55 between Tara and Vivaan in the ratio 1 : 4. How much does Vivaan get (in ₹)?
  27. 27.What is the smallest number you must take away from 868 so that it divides exactly by 8?
  28. 28.1/2 × 1/9 =
  29. 29.What is 10% of 80?
  30. 30.Divide ₹289 between Rohan and Arjun in the ratio 9 : 8. How much does Rohan get (in ₹)?
  31. 31.Two tanks hold 120 litres and 80 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  32. 32.Farhan takes 90 seconds and Tara takes 80 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?
  33. 33.How many factors does 68 have?
  34. 34.What is the smallest number you must take away from 189 so that it divides exactly by 11?
  35. 35.Which is closest to 799 × 81? (Round each number first.) (a) 64000 (b) 640000 (c) 6400 (d) 128000
  36. 36.How many factors does 42 have?
  37. 37.What is the smallest number you must add to 605 so that it divides exactly by 9?
  38. 38.7/9 of 36 + 4 × 9 =
  39. 39.The ratio of boys to girls in a class is 4 : 1. There are 20 boys. How many girls are there?
  40. 40.Which is closest to 104 + 695 + 502? (a) 1300 (b) 1400 (c) 1500 (d) 1200

Answer key

  1. 2
  2. 46
  3. 1800
  4. 3
  5. 540
  6. 11
  7. 18000
  8. 20
  9. 10
  10. 45
  11. 72
  12. 4000
  13. 64000
  14. 42
  15. 35
  16. 9
  17. 49
  18. 1
  19. 5
  20. 11
  21. 40
  22. 1032
  23. 44.8
  24. 60
  25. 24
  26. 44
  27. 4
  28. 1/18
  29. 8
  30. 153
  31. 40
  32. 720
  33. 6
  34. 2
  35. 64000
  36. 8
  37. 7
  38. 64
  39. 5
  40. 1300

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