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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 909 · 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.What is the smallest number you must take away from 426 so that it divides exactly by 13?
  2. 2.Find the HCF of 52 and 39.
  3. 3.Find the HCF of 48 and 84.
  4. 4.If 9 erasers cost ₹234, how much do 15 erasers cost (in ₹)?
  5. 5.Three temple bells ring every 30, 6 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  6. 6.Which of these numbers divides exactly by 6? (a) 2725 (b) 3793 (c) 8148 (d) 6442
  7. 7.The ratio of boys to girls in a class is 4 : 1. There are 32 boys. How many girls are there?
  8. 8.5/12 × 4/6 =
  9. 9.37 − 56 ÷ 8 × 5 =
  10. 10.Divide ₹130 between Aditya and Rohan in the ratio 1 : 9. How much does Aditya get (in ₹)?
  11. 11.What percent of 250 is 60?
  12. 12.If 2 notebooks cost ₹84, how much do 17 notebooks cost (in ₹)?
  13. 13.What is the smallest number you must take away from 505 so that it divides exactly by 7?
  14. 14.What is the smallest number you must add to 475 so that it divides exactly by 3?
  15. 15.Farhan takes 36 seconds and Sneha 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?
  16. 16.If 5 mangoes cost ₹85, how much do 11 mangoes cost (in ₹)?
  17. 17.How many factors does 49 have?
  18. 18.A hostel has enough food for 5 students for 26 days. How many days will the same food last for 13 students?
  19. 19.What is the smallest number you must take away from 818 so that it divides exactly by 3?
  20. 20.1/4 + 2/3 =
  21. 21.4.82 + 7.3 =
  22. 22.10 : 7 = 50 : ?
  23. 23.Which is closest to 705 + 698 + 598? (a) 2000 (b) 2200 (c) 1900 (d) 2100
  24. 24.The HCF of two numbers is 2 and their LCM is 112. One of the numbers is 16. What is the other number?
  25. 25.A hostel has enough food for 2 students for 9 days. How many days will the same food last for 3 students?
  26. 26.Two tanks hold 150 litres and 175 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  27. 27.The ratio of boys to girls in a class is 9 : 4. There are 63 boys. How many girls are there?
  28. 28.2 × (22 − 5) + 16 ÷ 8 =
  29. 29.Three temple bells ring every 20, 15 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  30. 30.Divide ₹464 between Meera and Isha in the ratio 7 : 1. How much does Isha get (in ₹)?
  31. 31.4 : 6 = 16 : ?
  32. 32.What is the smallest number you must take away from 633 so that it divides exactly by 13?
  33. 33.56 − 54 ÷ 6 × 5 =
  34. 34.Find the LCM of 18 and 8.
  35. 35.9.9 × 7 =
  36. 36.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 9, 15 or 3.
  37. 37.Round 86671 to the nearest ten.
  38. 38.(14 + 6) × 8 − 29 =
  39. 39.Three temple bells ring every 6, 15 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  40. 40.What is the smallest number you must add to 898 so that it divides exactly by 11?

Answer key

  1. 10
  2. 13
  3. 12
  4. 390
  5. 60
  6. 8148
  7. 8
  8. 5/18
  9. 2
  10. 13
  11. 24
  12. 714
  13. 1
  14. 2
  15. 144
  16. 187
  17. 3
  18. 10
  19. 2
  20. 11/12
  21. 12.12
  22. 35
  23. 2000
  24. 14
  25. 6
  26. 25
  27. 28
  28. 36
  29. 60
  30. 58
  31. 24
  32. 9
  33. 11
  34. 72
  35. 69.3
  36. 46
  37. 86670
  38. 131
  39. 90
  40. 4

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