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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 437 · 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.Find the LCM of 8 and 14.
  2. 2.29.2 ÷ 4 =
  3. 3.50% of a number is 115. What is the number?
  4. 4.Find the HCF of 12 and 9.
  5. 5.How many factors does 83 have?
  6. 6.A hostel has enough food for 10 students for 21 days. How many days will the same food last for 6 students?
  7. 7.If 5 cricket balls cost ₹55, how much do 16 cricket balls cost (in ₹)?
  8. 8.8.5 × 8 =
  9. 9.How many factors does 24 have?
  10. 10.Divide ₹280 between Saanvi and Priya in the ratio 1 : 9. How much does Priya get (in ₹)?
  11. 11.4.8 × 2 =
  12. 12.Which is closest to 800 × 38? (Round each number first.) (a) 3200 (b) 320000 (c) 32000 (d) 64000
  13. 13.Which is closest to 596 + 205 + 703? (a) 1400 (b) 1500 (c) 1600 (d) 1700
  14. 14.Divide ₹35 between Vivaan and Farhan in the ratio 2 : 3. How much does Vivaan get (in ₹)?
  15. 15.3/5 − 2/6 =
  16. 16.Two tanks hold 135 litres and 180 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  17. 17.75% of a number is 417. What is the number?
  18. 18.Find the third proportional to 6 and 18 (that is, 6 : 18 = 18 : ?).
  19. 19.1/3 + 2/6 =
  20. 20.29 + 12 × 5 − 24 =
  21. 21.1/7 of 77 + 8 × 3 =
  22. 22.1/2 + 4/12 =
  23. 23.Which is closest to 1799 ÷ 19? (a) 900 (b) 180 (c) 90 (d) 45
  24. 24.The ratio of boys to girls in a class is 3 : 1. There are 21 boys. How many girls are there?
  25. 25.Find the third proportional to 3 and 6 (that is, 3 : 6 = 6 : ?).
  26. 26.A hostel has enough food for 10 students for 30 days. How many days will the same food last for 15 students?
  27. 27.How many factors does 40 have?
  28. 28.Find the LCM of 10, 15 and 7.
  29. 29.6.3 × 9 =
  30. 30.What is 1/4 of 96 students?
  31. 31.3 : 12 = 6 : ?
  32. 32.Find the LCM of 4, 3 and 2.
  33. 33.The ratio of boys to girls in a class is 5 : 3. There are 50 boys. How many girls are there?
  34. 34.How many factors does 50 have?
  35. 35.8.83 + 1.7 =
  36. 36.The HCF of two numbers is 9 and their LCM is 162. One of the numbers is 18. What is the other number?
  37. 37.Find the LCM of 14 and 8.
  38. 38.9 painters can paint a school in 10 days. How many days would 18 painters take, working at the same speed?
  39. 39.A hall floor is 300 cm long and 180 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  40. 40.What is the smallest number you must take away from 358 so that it divides exactly by 11?

Answer key

  1. 56
  2. 7.3
  3. 230
  4. 3
  5. 2
  6. 35
  7. 176
  8. 68
  9. 8
  10. 252
  11. 9.6
  12. 32000
  13. 1500
  14. 14
  15. 4/15
  16. 45
  17. 556
  18. 54
  19. 2/3
  20. 65
  21. 35
  22. 5/6
  23. 90
  24. 7
  25. 12
  26. 20
  27. 8
  28. 210
  29. 56.7
  30. 24
  31. 24
  32. 12
  33. 30
  34. 6
  35. 10.53
  36. 81
  37. 56
  38. 5
  39. 15
  40. 6

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