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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 216 · 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. 1.7.19 + 6.4 =
  2. 2.What is the smallest number you must add to 472 so that it divides exactly by 9?
  3. 3.Aditya takes 72 seconds and Diya takes 48 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?
  4. 4.If 9 kg of rice costs ₹630, how many kg can you buy for ₹700?
  5. 5.Pooja takes 80 seconds and Kavya 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?
  6. 6.A hall floor is 125 cm long and 50 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  7. 7.Find the HCF of 98 and 126.
  8. 8.How many factors does 41 have?
  9. 9.Find the LCM of 6, 14 and 15.
  10. 10.5 × (16 − 9) + 12 ÷ 6 =
  11. 11.What is the smallest number you must take away from 642 so that it divides exactly by 7?
  12. 12.4/5 − 4/6 =
  13. 13.If 10 cricket balls cost ₹220, how much do 13 cricket balls cost (in ₹)?
  14. 14.If 5 pens cost ₹150, how much do 17 pens cost (in ₹)?
  15. 15.21.6 ÷ 9 =
  16. 16.What percent of 25 is 20?
  17. 17.Three temple bells ring every 8, 12 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  18. 18.Divide ₹390 between Manav and Rohan in the ratio 7 : 8. How much does Manav get (in ₹)?
  19. 19.120% of a number is 324. What is the number?
  20. 20.Find the third proportional to 2 and 6 (that is, 2 : 6 = 6 : ?).
  21. 21.Find the LCM of 2, 10 and 5.
  22. 22.The HCF of two numbers is 4 and their LCM is 96. One of the numbers is 12. What is the other number?
  23. 23.1.2 × 4 =
  24. 24.Divide ₹215 between Manav and Arjun in the ratio 4 : 1. How much does Manav get (in ₹)?
  25. 25.Three temple bells ring every 6, 15 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  26. 26.12 painters can paint a school in 27 days. How many days would 9 painters take, working at the same speed?
  27. 27.Find the LCM of 3, 7 and 4.
  28. 28.A hostel has enough food for 6 students for 26 days. How many days will the same food last for 12 students?
  29. 29.The ratio of boys to girls in a class is 1 : 2. There are 10 boys. How many girls are there?
  30. 30.9 : 5 = 81 : ?
  31. 31.Pooja scored 38 marks out of 40 in a test. What percentage did Pooja score?
  32. 32.What percent of 20 is 19?
  33. 33.(19 + 16) × 5 − 15 =
  34. 34.Which is closest to 2108 ÷ 29? (a) 70 (b) 700 (c) 35 (d) 140
  35. 35.Which is closest to 3599 ÷ 39? (a) 45 (b) 900 (c) 180 (d) 90
  36. 36.Find the LCM of 42 and 12.
  37. 37.The HCF of two numbers is 9 and their LCM is 54. One of the numbers is 18. What is the other number?
  38. 38.The HCF of two numbers is 6 and their LCM is 72. One of the numbers is 24. What is the other number?
  39. 39.If 3 kg of rice costs ₹117, how many kg can you buy for ₹507?
  40. 40.33 ÷ 5 =

Answer key

  1. 13.59
  2. 5
  3. 144
  4. 10
  5. 720
  6. 10
  7. 14
  8. 2
  9. 210
  10. 37
  11. 5
  12. 2/15
  13. 286
  14. 510
  15. 2.4
  16. 80
  17. 120
  18. 182
  19. 270
  20. 18
  21. 10
  22. 32
  23. 4.8
  24. 172
  25. 60
  26. 36
  27. 84
  28. 13
  29. 20
  30. 45
  31. 95
  32. 95
  33. 160
  34. 70
  35. 90
  36. 84
  37. 27
  38. 18
  39. 13
  40. 6.6

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