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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 14 · 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.Three temple bells ring every 24, 20 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  2. 2.Find the third proportional to 7 and 35 (that is, 7 : 35 = 35 : ?).
  3. 3.Kabir takes 60 seconds and Saanvi 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?
  4. 4.What percent of 200 is 44?
  5. 5.Divide ₹539 between Manav and Dev in the ratio 2 : 9. How much does Manav get (in ₹)?
  6. 6.How many factors does 32 have?
  7. 7.Three temple bells ring every 30, 12 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  8. 8.Find the third proportional to 4 and 20 (that is, 4 : 20 = 20 : ?).
  9. 9.Three temple bells ring every 6, 8 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  10. 10.Which is closest to 704 + 495 + 295? (a) 1700 (b) 1400 (c) 1600 (d) 1500
  11. 11.15 ÷ 5 × 5 + 19 =
  12. 12.27 + 3 × 3 − 12 =
  13. 13.10 : 4 = 50 : ?
  14. 14.Three temple bells ring every 9, 15 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  15. 15.What percent of 500 is 325?
  16. 16.(5 + 11) × 3 − 29 =
  17. 17.12 + 10 × 9 − 5 =
  18. 18.Three temple bells ring every 5, 15 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  19. 19.Which is closest to 198 × 89? (Round each number first.) (a) 18000 (b) 36000 (c) 180000 (d) 1800
  20. 20.Find the smallest number bigger than 6 that leaves a remainder of 2 when divided by 4, 6 or 3.
  21. 21.How many factors does 96 have?
  22. 22.What is the smallest number you must add to 847 so that it divides exactly by 4?
  23. 23.Find the third proportional to 5 and 25 (that is, 5 : 25 = 25 : ?).
  24. 24.A car goes 110 km on 10 litres of petrol. How far can it go on 31 litres (in km)?
  25. 25.The ratio of boys to girls in a class is 2 : 1. There are 18 boys. How many girls are there?
  26. 26.Round 30376 to the nearest hundred.
  27. 27.What is the smallest number you must add to 157 so that it divides exactly by 8?
  28. 28.Nisha scored 20 marks out of 25 in a test. What percentage did Nisha score?
  29. 29.Find the LCM of 9 and 4.
  30. 30.Which is closest to 2391 ÷ 31? (a) 40 (b) 800 (c) 80 (d) 160
  31. 31.If 11 notebooks cost ₹66, how much do 10 notebooks cost (in ₹)?
  32. 32.Find the LCM of 16 and 28.
  33. 33.Find the LCM of 6 and 8.
  34. 34.How many factors does 50 have?
  35. 35.Two tanks hold 30 litres and 40 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  36. 36.What is the smallest number you must add to 510 so that it divides exactly by 4?
  37. 37.8.9 × 8 =
  38. 38.Round 22.92 to one decimal place. =
  39. 39.66 − 49 ÷ 7 × 6 =
  40. 40.Find the HCF of 28 and 16.

Answer key

  1. 120
  2. 175
  3. 360
  4. 22
  5. 98
  6. 6
  7. 60
  8. 100
  9. 120
  10. 1500
  11. 34
  12. 24
  13. 20
  14. 90
  15. 65
  16. 19
  17. 97
  18. 60
  19. 18000
  20. 14
  21. 12
  22. 1
  23. 125
  24. 341
  25. 9
  26. 30400
  27. 3
  28. 80
  29. 36
  30. 80
  31. 60
  32. 112
  33. 24
  34. 6
  35. 10
  36. 2
  37. 71.2
  38. 22.9
  39. 24
  40. 4

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