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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 623 · 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.Divide ₹767 between Diya and Sneha in the ratio 5 : 8. How much does Diya get (in ₹)?
  2. 2.Kabir scored 21 marks out of 25 in a test. What percentage did Kabir score?
  3. 3.A hostel has enough food for 7 students for 8 days. How many days will the same food last for 2 students?
  4. 4.Find the third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
  5. 5.Zoya takes 50 seconds and Vivaan takes 30 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.What is the smallest number you must take away from 486 so that it divides exactly by 12?
  7. 7.How many factors does 80 have?
  8. 8.What is the smallest number you must add to 590 so that it divides exactly by 8?
  9. 9.The HCF of two numbers is 5 and their LCM is 120. One of the numbers is 15. What is the other number?
  10. 10.20% of a number is 15. What is the number?
  11. 11.39 + 5 × 7 − 11 =
  12. 12.Divide ₹583 between Meera and Rohan in the ratio 8 : 3. How much does Rohan get (in ₹)?
  13. 13.What is the smallest number you must take away from 946 so that it divides exactly by 9?
  14. 14.If 10 notebooks cost ₹330, how much do 20 notebooks cost (in ₹)?
  15. 15.(14 + 15) × 3 − 9 =
  16. 16.3 × (23 − 2) + 18 ÷ 6 =
  17. 17.Three temple bells ring every 9, 4 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  18. 18.The HCF of two numbers is 5 and their LCM is 105. One of the numbers is 35. What is the other number?
  19. 19.Find the LCM of 12 and 20.
  20. 20.A hostel has enough food for 3 students for 24 days. How many days will the same food last for 4 students?
  21. 21.What percent of 20 is 13?
  22. 22.Which is closest to 804 × 68? (Round each number first.) (a) 56000 (b) 112000 (c) 5600 (d) 560000
  23. 23.45 + 9 × 10 − 6 =
  24. 24.What is 25% of 316?
  25. 25.26 + 11 × 11 − 25 =
  26. 26.What is the smallest number you must add to 554 so that it divides exactly by 8?
  27. 27.The HCF of two numbers is 9 and their LCM is 504. One of the numbers is 72. What is the other number?
  28. 28.25% of a number is 125. What is the number?
  29. 29.Aditya takes 60 seconds and Kabir takes 45 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?
  30. 30.Which of these numbers divides exactly by 8? (a) 3047 (b) 4207 (c) 9414 (d) 8136
  31. 31.The HCF of two numbers is 7 and their LCM is 441. One of the numbers is 63. What is the other number?
  32. 32.7.5 × 6 =
  33. 33.5/7 of 56 + 8 × 2 =
  34. 34.1/9 of 72 + 8 × 5 =
  35. 35.If 9 kg of rice costs ₹216, how many kg can you buy for ₹288?
  36. 36.The ratio of boys to girls in a class is 6 : 7. There are 18 boys. How many girls are there?
  37. 37.Three temple bells ring every 4, 24 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  38. 38.Three temple bells ring every 30, 12 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  39. 39.Round 27.52 to one decimal place. =
  40. 40.(4 + 14) × 2 − 10 =

Answer key

  1. 295
  2. 84
  3. 28
  4. 32
  5. 150
  6. 6
  7. 10
  8. 2
  9. 40
  10. 75
  11. 63
  12. 159
  13. 1
  14. 660
  15. 78
  16. 66
  17. 36
  18. 15
  19. 60
  20. 18
  21. 65
  22. 56000
  23. 129
  24. 79
  25. 122
  26. 6
  27. 63
  28. 500
  29. 180
  30. 8136
  31. 49
  32. 45
  33. 56
  34. 48
  35. 12
  36. 21
  37. 72
  38. 60
  39. 27.5
  40. 26

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