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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 486 · 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 : 7 = 27 : ?
  2. 2.2/11 × 3/4 =
  3. 3.A hall floor is 150 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  4. 4.(17 + 5) × 4 − 27 =
  5. 5.2 × (13 − 5) + 10 ÷ 5 =
  6. 6.Three temple bells ring every 12, 6 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  7. 7.How many factors does 21 have?
  8. 8.Dev scored 4 marks out of 80 in a test. What percentage did Dev score?
  9. 9.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 10, 15 or 3.
  10. 10.8.6 × 8 =
  11. 11.Find the LCM of 5, 14 and 10.
  12. 12.The HCF of two numbers is 4 and their LCM is 60. One of the numbers is 20. What is the other number?
  13. 13.A hostel has enough food for 10 students for 21 days. How many days will the same food last for 14 students?
  14. 14.5/6 + 1/4 =
  15. 15.A hall floor is 140 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  16. 16.Find the HCF of 36 and 81.
  17. 17.Find the third proportional to 5 and 20 (that is, 5 : 20 = 20 : ?).
  18. 18.8 × (11 − 8) + 70 ÷ 7 =
  19. 19.1/9 + 2/4 =
  20. 20.72 ÷ 9 × 4 + 7 =
  21. 21.How many factors does 39 have?
  22. 22.Which is closest to 799 ÷ 41? (a) 40 (b) 20 (c) 10 (d) 200
  23. 23.Find the LCM of 3, 6 and 2.
  24. 24.Divide ₹280 between Nisha and Tara in the ratio 3 : 2. How much does Nisha get (in ₹)?
  25. 25.Karan scored 5 marks out of 25 in a test. What percentage did Karan score?
  26. 26.Find the LCM of 11, 12 and 4.
  27. 27.If 9 bottles of juice cost ₹522, how much do 8 bottles of juice cost (in ₹)?
  28. 28.Round 21356 to the nearest thousand.
  29. 29.What is 120% of 390?
  30. 30.Which of these numbers divides exactly by 8? (a) 2357 (b) 4366 (c) 3480 (d) 2475
  31. 31.What is the smallest number you must take away from 641 so that it divides exactly by 13?
  32. 32.How many factors does 34 have?
  33. 33.2 : 3 = 6 : ?
  34. 34.Which of these numbers divides exactly by 3? (a) 4988 (b) 5081 (c) 9347 (d) 2244
  35. 35.A hall floor is 300 cm long and 250 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  36. 36.Which is closest to 796 × 68? (Round each number first.) (a) 5600 (b) 56000 (c) 560000 (d) 112000
  37. 37.Aditya scored 34 marks out of 40 in a test. What percentage did Aditya score?
  38. 38.If 3 kg of rice costs ₹210, how many kg can you buy for ₹700?
  39. 39.36 − 14 ÷ 2 × 2 =
  40. 40.9 painters can paint a school in 19 days. How many days would 19 painters take, working at the same speed?

Answer key

  1. 63
  2. 3/22
  3. 20
  4. 61
  5. 18
  6. 60
  7. 4
  8. 5
  9. 32
  10. 68.8
  11. 70
  12. 12
  13. 15
  14. 13/12
  15. 35
  16. 9
  17. 80
  18. 34
  19. 11/18
  20. 39
  21. 4
  22. 20
  23. 6
  24. 168
  25. 20
  26. 132
  27. 464
  28. 21000
  29. 468
  30. 3480
  31. 4
  32. 4
  33. 9
  34. 2244
  35. 30
  36. 56000
  37. 85
  38. 10
  39. 22
  40. 9

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