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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 412 · 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.If 7 notebooks cost ₹378, how much do 4 notebooks cost (in ₹)?
  2. 2.20 − 8 ÷ 2 × 3 =
  3. 3.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 3, 6 or 15.
  4. 4.1/2 of 8 + 4 × 4 =
  5. 5.Divide ₹90 between Saanvi and Vivaan in the ratio 7 : 8. How much does Vivaan get (in ₹)?
  6. 6.Which is closest to 2508 ÷ 49? (a) 25 (b) 100 (c) 500 (d) 50
  7. 7.Divide ₹55 between Aarav and Isha in the ratio 2 : 9. How much does Aarav get (in ₹)?
  8. 8.8/10 − 3/12 =
  9. 9.Write 19/20 as a percent.
  10. 10.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 15, 3 or 9.
  11. 11.Find the third proportional to 3 and 15 (that is, 3 : 15 = 15 : ?).
  12. 12.The ratio of boys to girls in a class is 7 : 3. There are 14 boys. How many girls are there?
  13. 13.The HCF of two numbers is 5 and their LCM is 75. One of the numbers is 25. What is the other number?
  14. 14.A hostel has enough food for 2 students for 6 days. How many days will the same food last for 6 students?
  15. 15.Divide ₹442 between Rahul and Rohan in the ratio 9 : 4. How much does Rohan get (in ₹)?
  16. 16.What is the smallest number you must add to 868 so that it divides exactly by 11?
  17. 17.What is the smallest number you must take away from 151 so that it divides exactly by 6?
  18. 18.3/5 + 3/4 =
  19. 19.1/2 of 18 + 3 × 6 =
  20. 20.How many factors does 92 have?
  21. 21.6/10 × 1/6 =
  22. 22.10% of a number is 1. What is the number?
  23. 23.Find the third proportional to 9 and 27 (that is, 9 : 27 = 27 : ?).
  24. 24.5 : 10 = 40 : ?
  25. 25.1/2 − 1/11 =
  26. 26.What is 5% of 380?
  27. 27.What is 50% of 416?
  28. 28.Dev takes 40 seconds and Farhan takes 90 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?
  29. 29.A hall floor is 420 cm long and 300 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  30. 30.3/12 × 1/7 =
  31. 31.How many factors does 91 have?
  32. 32.What percent of 20 is 6?
  33. 33.How many factors does 53 have?
  34. 34.Divide ₹100 between Karan and Zoya in the ratio 4 : 1. How much does Karan get (in ₹)?
  35. 35.Three temple bells ring every 4, 6 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  36. 36.Write 3/4 as a percent.
  37. 37.Divide ₹301 between Meera and Nisha in the ratio 3 : 4. How much does Nisha get (in ₹)?
  38. 38.The ratio of boys to girls in a class is 2 : 3. There are 14 boys. How many girls are there?
  39. 39.A car goes 180 km on 12 litres of petrol. How far can it go on 23 litres (in km)?
  40. 40.24 − 14 ÷ 7 × 6 =

Answer key

  1. 216
  2. 8
  3. 31
  4. 20
  5. 48
  6. 50
  7. 10
  8. 11/20
  9. 95
  10. 47
  11. 75
  12. 6
  13. 15
  14. 2
  15. 136
  16. 1
  17. 1
  18. 27/20
  19. 27
  20. 6
  21. 1/10
  22. 10
  23. 81
  24. 80
  25. 9/22
  26. 19
  27. 208
  28. 360
  29. 35
  30. 1/28
  31. 4
  32. 30
  33. 2
  34. 80
  35. 60
  36. 75
  37. 172
  38. 21
  39. 345
  40. 12

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