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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 846 · 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. 1.3/8 × 3/11 =
  2. 2.What is 5% of 160?
  3. 3.Which is closest to 1005 ÷ 19? (a) 500 (b) 25 (c) 50 (d) 100
  4. 4.Find the third proportional to 5 and 25 (that is, 5 : 25 = 25 : ?).
  5. 5.Which is closest to 2709 ÷ 31? (a) 180 (b) 45 (c) 900 (d) 90
  6. 6.If 11 pencil boxes cost ₹110, how much do 9 pencil boxes cost (in ₹)?
  7. 7.What percent of 50 is 28?
  8. 8.The HCF of two numbers is 9 and their LCM is 162. One of the numbers is 81. What is the other number?
  9. 9.What is 1/3 of ₹63?
  10. 10.Find the third proportional to 7 and 28 (that is, 7 : 28 = 28 : ?).
  11. 11.What is the smallest number you must take away from 827 so that it divides exactly by 3?
  12. 12.7 : 14 = 35 : ?
  13. 13.What is the smallest number you must take away from 177 so that it divides exactly by 9?
  14. 14.If 12 notebooks cost ₹204, how much do 5 notebooks cost (in ₹)?
  15. 15.A hall floor is 240 cm long and 180 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  16. 16.4 × (24 − 16) + 28 ÷ 7 =
  17. 17.Three temple bells ring every 12, 15 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  18. 18.Write 1/4 as a percent.
  19. 19.Find the LCM of 6 and 8.
  20. 20.Three temple bells ring every 30, 20 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  21. 21.10 painters can paint a school in 29 days. How many days would 5 painters take, working at the same speed?
  22. 22.5/10 × 1/12 =
  23. 23.Two tanks hold 40 litres and 35 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  24. 24.Find the HCF of 117 and 91.
  25. 25.Which of these numbers divides exactly by 8? (a) 5879 (b) 2076 (c) 2547 (d) 1728
  26. 26.How many factors does 38 have?
  27. 27.The HCF of two numbers is 4 and their LCM is 96. One of the numbers is 12. What is the other number?
  28. 28.80% of a number is 376. What is the number?
  29. 29.What is the smallest number you must take away from 102 so that it divides exactly by 4?
  30. 30.Which is closest to 594 ÷ 21? (a) 15 (b) 300 (c) 30 (d) 60
  31. 31.Find the LCM of 10 and 18.
  32. 32.8 × (17 − 7) + 12 ÷ 4 =
  33. 33.Round 58284 to the nearest ten.
  34. 34.Find the HCF of 50 and 40.
  35. 35.A hall floor is 270 cm long and 225 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  36. 36.5/7 of 49 + 7 × 3 =
  37. 37.If 9 pencil boxes cost ₹387, how much do 5 pencil boxes cost (in ₹)?
  38. 38.The HCF of two numbers is 7 and their LCM is 147. One of the numbers is 49. What is the other number?
  39. 39.What percent of 400 is 4?
  40. 40.8.4 ÷ 2 =

Answer key

  1. 9/88
  2. 8
  3. 50
  4. 125
  5. 90
  6. 90
  7. 56
  8. 18
  9. 21
  10. 112
  11. 2
  12. 70
  13. 6
  14. 85
  15. 12
  16. 36
  17. 60
  18. 25
  19. 24
  20. 120
  21. 58
  22. 1/24
  23. 5
  24. 13
  25. 1728
  26. 4
  27. 32
  28. 470
  29. 2
  30. 30
  31. 90
  32. 83
  33. 58280
  34. 10
  35. 30
  36. 56
  37. 215
  38. 21
  39. 1
  40. 4.2

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