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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 709 · 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. 1.11 : 13 = 22 : ?
  2. 2.73 − 36 ÷ 6 × 7 =
  3. 3.A hall floor is 160 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  4. 4.What is 5% of 260?
  5. 5.What is the smallest number you must take away from 571 so that it divides exactly by 9?
  6. 6.A hostel has enough food for 12 students for 6 days. How many days will the same food last for 2 students?
  7. 7.The HCF of two numbers is 5 and their LCM is 140. One of the numbers is 35. What is the other number?
  8. 8.The ratio of boys to girls in a class is 4 : 1. There are 8 boys. How many girls are there?
  9. 9.What percent of 80 is 20?
  10. 10.11 : 2 = 88 : ?
  11. 11.Find the third proportional to 8 and 32 (that is, 8 : 32 = 32 : ?).
  12. 12.Round 84796 to the nearest thousand.
  13. 13.If 3 kg of rice costs ₹264, how many kg can you buy for ₹704?
  14. 14.5 : 6 = 25 : ?
  15. 15.Find the HCF of 49 and 56.
  16. 16.Aarav takes 36 seconds and Farhan takes 54 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?
  17. 17.How many factors does 97 have?
  18. 18.Two tanks hold 75 litres and 50 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  19. 19.(19 + 7) × 9 − 24 =
  20. 20.Rahul scored 41 marks out of 50 in a test. What percentage did Rahul score?
  21. 21.How many factors does 23 have?
  22. 22.Find the HCF of 18 and 16.
  23. 23.4.1 × 8 =
  24. 24.How many factors does 91 have?
  25. 25.Write 1/2 as a percent.
  26. 26.9 × (15 − 3) + 12 ÷ 3 =
  27. 27.If 10 pencil boxes cost ₹180, how much do 16 pencil boxes cost (in ₹)?
  28. 28.Which is closest to 300 + 904 + 696? (a) 2100 (b) 1900 (c) 2000 (d) 1800
  29. 29.Round 12.87 to one decimal place. =
  30. 30.(13 + 16) × 2 − 14 =
  31. 31.Which is closest to 802 × 72? (Round each number first.) (a) 112000 (b) 56000 (c) 560000 (d) 5600
  32. 32.77 − 28 ÷ 4 × 9 =
  33. 33.Find the third proportional to 8 and 16 (that is, 8 : 16 = 16 : ?).
  34. 34.7 × (22 − 5) + 20 ÷ 4 =
  35. 35.Round 49735 to the nearest hundred.
  36. 36.What is the smallest number you must take away from 487 so that it divides exactly by 7?
  37. 37.Divide ₹429 between Sneha and Rohan in the ratio 2 : 9. How much does Rohan get (in ₹)?
  38. 38.Round 14.57 to one decimal place. =
  39. 39.If 10 pens cost ₹250, how much do 9 pens cost (in ₹)?
  40. 40.How many factors does 31 have?

Answer key

  1. 26
  2. 31
  3. 40
  4. 13
  5. 4
  6. 36
  7. 20
  8. 2
  9. 25
  10. 16
  11. 128
  12. 85000
  13. 8
  14. 30
  15. 7
  16. 108
  17. 2
  18. 25
  19. 210
  20. 82
  21. 2
  22. 2
  23. 32.8
  24. 4
  25. 50
  26. 112
  27. 288
  28. 1900
  29. 12.9
  30. 44
  31. 56000
  32. 14
  33. 32
  34. 124
  35. 49700
  36. 4
  37. 351
  38. 14.6
  39. 225
  40. 2

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