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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 496 · 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 HCF of 56 and 49.
  2. 2.A hostel has enough food for 6 students for 19 days. How many days will the same food last for 2 students?
  3. 3.A hostel has enough food for 4 students for 14 days. How many days will the same food last for 7 students?
  4. 4.If 2 pens cost ₹30, how much do 4 pens cost (in ₹)?
  5. 5.If 4 mangoes cost ₹120, how much do 10 mangoes cost (in ₹)?
  6. 6.Find the HCF of 14 and 18.
  7. 7.Farhan takes 45 seconds and Ananya takes 40 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. 8.31 − 16 ÷ 2 × 3 =
  9. 9.What is 1/3 of 9 km?
  10. 10.Which is closest to 497 + 204 + 896? (a) 1800 (b) 1600 (c) 1700 (d) 1500
  11. 11.Which is closest to 196 × 38? (Round each number first.) (a) 80000 (b) 8000 (c) 16000 (d) 800
  12. 12.A car goes 40 km on 4 litres of petrol. How far can it go on 39 litres (in km)?
  13. 13.What is the smallest number you must take away from 817 so that it divides exactly by 3?
  14. 14.14.7 ÷ 7 =
  15. 15.What is the smallest number you must add to 673 so that it divides exactly by 8?
  16. 16.(13 + 17) × 8 − 3 =
  17. 17.A hall floor is 75 cm long and 50 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  18. 18.Which is closest to 1607 ÷ 39? (a) 400 (b) 80 (c) 20 (d) 40
  19. 19.Find the HCF of 15 and 27.
  20. 20.7/11 × 1/5 =
  21. 21.Find the LCM of 10, 15 and 5.
  22. 22.Three temple bells ring every 30, 20 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  23. 23.What is the smallest number you must add to 801 so that it divides exactly by 11?
  24. 24.Divide ₹171 between Tara and Pooja in the ratio 2 : 1. How much does Tara get (in ₹)?
  25. 25.Write 1/5 as a percent.
  26. 26.Round 10.54 to one decimal place. =
  27. 27.What is 1/5 of 55 km?
  28. 28.The HCF of two numbers is 8 and their LCM is 320. One of the numbers is 40. What is the other number?
  29. 29.150% of a number is 252. What is the number?
  30. 30.80% of a number is 308. What is the number?
  31. 31.Which is closest to 304 × 70? (Round each number first.) (a) 21000 (b) 2100 (c) 210000 (d) 42000
  32. 32.Find the LCM of 8 and 14.
  33. 33.Divide ₹117 between Kabir and Aarav in the ratio 7 : 2. How much does Kabir get (in ₹)?
  34. 34.6/8 + 4/7 =
  35. 35.Three temple bells ring every 6, 9 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  36. 36.Find the LCM of 18 and 24.
  37. 37.Three temple bells ring every 30, 20 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  38. 38.6 : 3 = 42 : ?
  39. 39.Three temple bells ring every 5, 30 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  40. 40.A car goes 60 km on 5 litres of petrol. How far can it go on 12 litres (in km)?

Answer key

  1. 7
  2. 57
  3. 8
  4. 60
  5. 300
  6. 2
  7. 360
  8. 7
  9. 3
  10. 1600
  11. 8000
  12. 390
  13. 1
  14. 2.1
  15. 7
  16. 237
  17. 6
  18. 40
  19. 3
  20. 7/55
  21. 30
  22. 60
  23. 2
  24. 114
  25. 20
  26. 10.5
  27. 11
  28. 64
  29. 168
  30. 385
  31. 21000
  32. 56
  33. 91
  34. 37/28
  35. 90
  36. 72
  37. 120
  38. 21
  39. 60
  40. 144

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