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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 332 · 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.A hall floor is 175 cm long and 75 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  2. 2.What is 2/7 of 56 kg?
  3. 3.How many factors does 95 have?
  4. 4.If 7 kg of rice costs ₹525, how many kg can you buy for ₹600?
  5. 5.6 : 5 = 18 : ?
  6. 6.(6 + 17) × 7 − 16 =
  7. 7.Three temple bells ring every 20, 10 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  8. 8.4/11 + 2/5 =
  9. 9.Find the HCF of 36 and 60.
  10. 10.What is the smallest number you must add to 792 so that it divides exactly by 7?
  11. 11.How many factors does 99 have?
  12. 12.Which is closest to 3608 ÷ 41? (a) 90 (b) 45 (c) 180 (d) 900
  13. 13.What is 40% of 180?
  14. 14.A hostel has enough food for 6 students for 25 days. How many days will the same food last for 10 students?
  15. 15.Find the third proportional to 4 and 16 (that is, 4 : 16 = 16 : ?).
  16. 16.Find the LCM of 5, 7 and 3.
  17. 17.Which is closest to 97 + 805 + 903? (a) 1800 (b) 1900 (c) 1700 (d) 2000
  18. 18.Which of these numbers divides exactly by 6? (a) 5413 (b) 1136 (c) 7116 (d) 5091
  19. 19.If 3 erasers cost ₹117, how much do 15 erasers cost (in ₹)?
  20. 20.Write 1/10 as a percent.
  21. 21.1/3 × 4/7 =
  22. 22.The HCF of two numbers is 9 and their LCM is 315. One of the numbers is 45. What is the other number?
  23. 23.A hall floor is 200 cm long and 75 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  24. 24.11 painters can paint a school in 16 days. How many days would 4 painters take, working at the same speed?
  25. 25.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?
  26. 26.Find the LCM of 2 and 9.
  27. 27.What is the smallest number you must take away from 514 so that it divides exactly by 7?
  28. 28.8 : 6 = 72 : ?
  29. 29.What is the smallest number you must add to 308 so that it divides exactly by 9?
  30. 30.20% of a number is 49. What is the number?
  31. 31.How many factors does 27 have?
  32. 32.The HCF of two numbers is 9 and their LCM is 126. One of the numbers is 63. What is the other number?
  33. 33.Round 38.23 to one decimal place. =
  34. 34.Find the smallest number bigger than 6 that leaves a remainder of 1 when divided by 5, 3 or 6.
  35. 35.Ishaan takes 90 seconds and Isha takes 36 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?
  36. 36.How many factors does 86 have?
  37. 37.45 ÷ 6 =
  38. 38.Divide ₹186 between Karan and Dev in the ratio 1 : 5. How much does Dev get (in ₹)?
  39. 39.16 ÷ 4 × 2 + 16 =
  40. 40.Find the LCM of 2 and 3.

Answer key

  1. 21
  2. 16
  3. 4
  4. 8
  5. 15
  6. 145
  7. 120
  8. 42/55
  9. 12
  10. 6
  11. 6
  12. 90
  13. 72
  14. 15
  15. 64
  16. 105
  17. 1800
  18. 7116
  19. 585
  20. 10
  21. 4/21
  22. 63
  23. 24
  24. 44
  25. 120
  26. 18
  27. 3
  28. 54
  29. 7
  30. 245
  31. 4
  32. 18
  33. 38.2
  34. 31
  35. 180
  36. 4
  37. 7.5
  38. 155
  39. 24
  40. 6

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