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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 369 · 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.Find the third proportional to 6 and 18 (that is, 6 : 18 = 18 : ?).
  2. 2.Three temple bells ring every 24, 8 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  3. 3.Vivaan takes 45 seconds and Ishaan 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.Diya takes 72 seconds and Kabir 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?
  5. 5.Find the LCM of 7, 11 and 2.
  6. 6.Find the HCF of 56 and 98.
  7. 7.Rahul scored 19 marks out of 20 in a test. What percentage did Rahul score?
  8. 8.What is 120% of 465?
  9. 9.2/3 + 1/10 =
  10. 10.The HCF of two numbers is 6 and their LCM is 36. One of the numbers is 12. What is the other number?
  11. 11.What is 5/7 of 175 km?
  12. 12.Round 30588 to the nearest ten.
  13. 13.Find the LCM of 10, 2 and 5.
  14. 14.Find the LCM of 25 and 45.
  15. 15.How many factors does 51 have?
  16. 16.The HCF of two numbers is 8 and their LCM is 360. One of the numbers is 40. What is the other number?
  17. 17.What is the smallest number you must take away from 325 so that it divides exactly by 12?
  18. 18.Which of these numbers divides exactly by 9? (a) 5362 (b) 6365 (c) 9171 (d) 2875
  19. 19.If 6 bottles of juice cost ₹318, how much do 13 bottles of juice cost (in ₹)?
  20. 20.2/5 × 8/12 =
  21. 21.7 painters can paint a school in 4 days. How many days would 4 painters take, working at the same speed?
  22. 22.1.4 × 2 =
  23. 23.Priya takes 45 seconds and Ananya takes 72 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?
  24. 24.15% of a number is 45. What is the number?
  25. 25.The HCF of two numbers is 5 and their LCM is 280. One of the numbers is 35. What is the other number?
  26. 26.1/4 × 1/6 =
  27. 27.What is 2/7 of 168 students?
  28. 28.Which of these numbers divides exactly by 8? (a) 7667 (b) 9151 (c) 3819 (d) 6416
  29. 29.59.2 ÷ 8 =
  30. 30.Find the LCM of 9, 7 and 2.
  31. 31.1/2 + 6/7 =
  32. 32.What is 15% of 100?
  33. 33.Find the third proportional to 8 and 24 (that is, 8 : 24 = 24 : ?).
  34. 34.15 ÷ 6 =
  35. 35.3.73 + 6.2 =
  36. 36.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 4, 12 or 3.
  37. 37.72 ÷ 6 × 3 + 8 =
  38. 38.Find the LCM of 35 and 10.
  39. 39.(13 + 8) × 5 − 2 =
  40. 40.Which is closest to 799 × 38? (Round each number first.) (a) 32000 (b) 320000 (c) 3200 (d) 64000

Answer key

  1. 54
  2. 120
  3. 720
  4. 360
  5. 154
  6. 14
  7. 95
  8. 558
  9. 23/30
  10. 18
  11. 125
  12. 30590
  13. 10
  14. 225
  15. 4
  16. 72
  17. 1
  18. 9171
  19. 689
  20. 4/15
  21. 7
  22. 2.8
  23. 360
  24. 300
  25. 40
  26. 1/24
  27. 48
  28. 6416
  29. 7.4
  30. 126
  31. 19/14
  32. 15
  33. 72
  34. 2.5
  35. 9.93
  36. 13
  37. 44
  38. 70
  39. 103
  40. 32000

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