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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 514 · 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 3 and 9 (that is, 3 : 9 = 9 : ?).
  2. 2.Priya scored 13 marks out of 25 in a test. What percentage did Priya score?
  3. 3.7.31 + 9.8 =
  4. 4.6.53 + 5.8 =
  5. 5.Find the HCF of 21 and 14.
  6. 6.Saanvi takes 50 seconds and Kabir 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?
  7. 7.Farhan takes 30 seconds and Kavya 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?
  8. 8.1/5 + 2/3 =
  9. 9.10/11 − 1/2 =
  10. 10.Round 25.56 to one decimal place. =
  11. 11.2/4 − 1/3 =
  12. 12.What percent of 50 is 30?
  13. 13.The ratio of boys to girls in a class is 8 : 1. There are 48 boys. How many girls are there?
  14. 14.What is the smallest number you must take away from 358 so that it divides exactly by 6?
  15. 15.Two tanks hold 270 litres and 240 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  16. 16.4 × (28 − 4) + 45 ÷ 9 =
  17. 17.Which is closest to 401 × 19? (Round each number first.) (a) 80000 (b) 16000 (c) 800 (d) 8000
  18. 18.44 + 5 × 4 − 19 =
  19. 19.Round 52.28 to one decimal place. =
  20. 20.8.2 × 4 =
  21. 21.The ratio of boys to girls in a class is 2 : 1. There are 10 boys. How many girls are there?
  22. 22.7/8 + 1/3 =
  23. 23.How many factors does 27 have?
  24. 24.Which is closest to 903 × 88? (Round each number first.) (a) 810000 (b) 81000 (c) 162000 (d) 8100
  25. 25.Priya scored 8 marks out of 80 in a test. What percentage did Priya score?
  26. 26.Find the third proportional to 8 and 24 (that is, 8 : 24 = 24 : ?).
  27. 27.The HCF of two numbers is 2 and their LCM is 112. One of the numbers is 16. What is the other number?
  28. 28.Which is closest to 895 + 401 + 395? (a) 1800 (b) 1600 (c) 1700 (d) 1900
  29. 29.8 × (10 − 6) + 14 ÷ 7 =
  30. 30.What is the smallest number you must take away from 671 so that it divides exactly by 13?
  31. 31.Three temple bells ring every 4, 30 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  32. 32.Round 98.42 to one decimal place. =
  33. 33.Three temple bells ring every 5, 15 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  34. 34.How many factors does 46 have?
  35. 35.Find the LCM of 24 and 21.
  36. 36.Find the HCF of 15 and 25.
  37. 37.The HCF of two numbers is 9 and their LCM is 216. One of the numbers is 27. What is the other number?
  38. 38.What is the smallest number you must take away from 549 so that it divides exactly by 8?
  39. 39.44 + 7 × 3 − 32 =
  40. 40.Find the smallest number bigger than 5 that leaves a remainder of 2 when divided by 3, 5 or 4.

Answer key

  1. 27
  2. 52
  3. 17.11
  4. 12.33
  5. 7
  6. 450
  7. 270
  8. 13/15
  9. 9/22
  10. 25.6
  11. 1/6
  12. 60
  13. 6
  14. 4
  15. 30
  16. 101
  17. 8000
  18. 45
  19. 52.3
  20. 32.8
  21. 5
  22. 29/24
  23. 4
  24. 81000
  25. 10
  26. 72
  27. 14
  28. 1700
  29. 34
  30. 8
  31. 60
  32. 98.4
  33. 45
  34. 4
  35. 168
  36. 5
  37. 72
  38. 5
  39. 33
  40. 62

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