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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 911 · 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. 1.48 + 7 × 12 − 13 =
  2. 2.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 5, 10 or 3.
  3. 3.Find the LCM of 30 and 48.
  4. 4.What is 80% of 465?
  5. 5.If 3 mangoes cost ₹102, how much do 9 mangoes cost (in ₹)?
  6. 6.3 : 7 = 12 : ?
  7. 7.Three temple bells ring every 10, 18 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  8. 8.Divide ₹242 between Aditya and Tara in the ratio 4 : 7. How much does Aditya get (in ₹)?
  9. 9.4/11 − 2/6 =
  10. 10.Divide ₹540 between Rahul and Sneha in the ratio 7 : 5. How much does Rahul get (in ₹)?
  11. 11.Round 18.74 to one decimal place. =
  12. 12.Two tanks hold 15 litres and 20 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  13. 13.Find the HCF of 65 and 104.
  14. 14.How many factors does 82 have?
  15. 15.5 : 7 = 40 : ?
  16. 16.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 9, 12 or 15.
  17. 17.Two tanks hold 350 litres and 300 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  18. 18.Which is closest to 1201 ÷ 31? (a) 40 (b) 80 (c) 400 (d) 20
  19. 19.15 ÷ 5 × 4 + 12 =
  20. 20.If 7 kg of rice costs ₹504, how many kg can you buy for ₹1008?
  21. 21.Write 3/5 as a percent.
  22. 22.3/4 − 5/8 =
  23. 23.A hostel has enough food for 3 students for 9 days. How many days will the same food last for 9 students?
  24. 24.48 ÷ 6 × 5 + 26 =
  25. 25.The HCF of two numbers is 3 and their LCM is 54. One of the numbers is 27. What is the other number?
  26. 26.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 4, 3 or 10.
  27. 27.11 : 8 = 44 : ?
  28. 28.Three temple bells ring every 9, 4 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  29. 29.Find the HCF of 8 and 20.
  30. 30.Which is closest to 400 × 42? (Round each number first.) (a) 160000 (b) 16000 (c) 1600 (d) 32000
  31. 31.3 × (17 − 8) + 20 ÷ 5 =
  32. 32.A car goes 240 km on 12 litres of petrol. How far can it go on 39 litres (in km)?
  33. 33.What is the smallest number you must add to 866 so that it divides exactly by 6?
  34. 34.33 + 10 × 7 − 17 =
  35. 35.Find the third proportional to 5 and 25 (that is, 5 : 25 = 25 : ?).
  36. 36.Which is closest to 196 + 396 + 304? (a) 1000 (b) 900 (c) 800 (d) 1100
  37. 37.How many factors does 49 have?
  38. 38.12 : 10 = 72 : ?
  39. 39.Find the LCM of 12, 4 and 14.
  40. 40.9.6 ÷ 2 =

Answer key

  1. 119
  2. 31
  3. 240
  4. 372
  5. 306
  6. 28
  7. 90
  8. 88
  9. 1/33
  10. 315
  11. 18.7
  12. 5
  13. 13
  14. 4
  15. 56
  16. 182
  17. 50
  18. 40
  19. 24
  20. 14
  21. 60
  22. 1/8
  23. 3
  24. 66
  25. 6
  26. 61
  27. 32
  28. 36
  29. 4
  30. 16000
  31. 31
  32. 780
  33. 4
  34. 86
  35. 125
  36. 900
  37. 3
  38. 60
  39. 84
  40. 4.8

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