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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 261 · 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. 1.8 × (21 − 20) + 36 ÷ 6 =
  2. 2.What percent of 20 is 12?
  3. 3.Three temple bells ring every 12, 6 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  4. 4.Three temple bells ring every 10, 4 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  5. 5.Find the HCF of 12 and 28.
  6. 6.8 : 2 = 56 : ?
  7. 7.What percent of 500 is 490?
  8. 8.Which of these numbers divides exactly by 8? (a) 2656 (b) 3570 (c) 1961 (d) 2198
  9. 9.If 9 notebooks cost ₹189, how much do 10 notebooks cost (in ₹)?
  10. 10.A hostel has enough food for 5 students for 16 days. How many days will the same food last for 4 students?
  11. 11.The HCF of two numbers is 5 and their LCM is 140. One of the numbers is 20. What is the other number?
  12. 12.The HCF of two numbers is 8 and their LCM is 96. One of the numbers is 32. What is the other number?
  13. 13.The ratio of boys to girls in a class is 3 : 1. There are 30 boys. How many girls are there?
  14. 14.Find the HCF of 77 and 66.
  15. 15.The ratio of boys to girls in a class is 2 : 1. There are 16 boys. How many girls are there?
  16. 16.65.7 ÷ 9 =
  17. 17.The ratio of boys to girls in a class is 7 : 9. There are 42 boys. How many girls are there?
  18. 18.80% of a number is 44. What is the number?
  19. 19.What is 50% of 176?
  20. 20.41 − 49 ÷ 7 × 2 =
  21. 21.Diya takes 30 seconds and Isha 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?
  22. 22.Find the smallest number bigger than 15 that leaves a remainder of 3 when divided by 15, 8 or 4.
  23. 23.Find the LCM of 18 and 8.
  24. 24.Find the LCM of 4 and 14.
  25. 25.15% of a number is 45. What is the number?
  26. 26.What is the smallest number you must add to 303 so that it divides exactly by 9?
  27. 27.(7 + 2) × 7 − 1 =
  28. 28.5/12 + 2/3 =
  29. 29.Find the LCM of 13, 3 and 12.
  30. 30.7.66 + 3.5 =
  31. 31.27 + 9 × 6 − 7 =
  32. 32.What is the smallest number you must take away from 241 so that it divides exactly by 13?
  33. 33.15% of a number is 27. What is the number?
  34. 34.A car goes 108 km on 6 litres of petrol. How far can it go on 40 litres (in km)?
  35. 35.Kavya takes 60 seconds and Kabir takes 40 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.What is 5% of 60?
  37. 37.11 − 14 ÷ 7 × 4 =
  38. 38.Find the HCF of 6 and 14.
  39. 39.A hall floor is 180 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  40. 40.The ratio of boys to girls in a class is 7 : 1. There are 42 boys. How many girls are there?

Answer key

  1. 14
  2. 60
  3. 24
  4. 20
  5. 4
  6. 14
  7. 98
  8. 2656
  9. 210
  10. 20
  11. 35
  12. 24
  13. 10
  14. 11
  15. 8
  16. 7.3
  17. 54
  18. 55
  19. 88
  20. 27
  21. 270
  22. 123
  23. 72
  24. 28
  25. 300
  26. 3
  27. 62
  28. 13/12
  29. 156
  30. 11.16
  31. 74
  32. 7
  33. 180
  34. 720
  35. 120
  36. 3
  37. 3
  38. 2
  39. 6
  40. 6

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