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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 519 · 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.A hostel has enough food for 5 students for 23 days. How many days will the same food last for 23 students?
  2. 2.Find the smallest number bigger than 15 that leaves a remainder of 3 when divided by 4, 15 or 5.
  3. 3.Which of these numbers divides exactly by 11? (a) 3377 (b) 1519 (c) 8592 (d) 2317
  4. 4.Find the LCM of 21 and 6.
  5. 5.What is the smallest number you must take away from 943 so that it divides exactly by 4?
  6. 6.Three temple bells ring every 24, 10 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  7. 7.How many factors does 13 have?
  8. 8.Round 68.72 to one decimal place. =
  9. 9.What is the smallest number you must add to 261 so that it divides exactly by 7?
  10. 10.Which is closest to 3008 ÷ 49? (a) 30 (b) 120 (c) 600 (d) 60
  11. 11.Write 8/25 as a percent.
  12. 12.(5 + 10) × 8 − 1 =
  13. 13.Find the third proportional to 5 and 10 (that is, 5 : 10 = 10 : ?).
  14. 14.The ratio of boys to girls in a class is 9 : 2. There are 18 boys. How many girls are there?
  15. 15.Divide ₹162 between Ananya and Aarav in the ratio 8 : 1. How much does Aarav get (in ₹)?
  16. 16.What percent of 250 is 135?
  17. 17.Three temple bells ring every 12, 10 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  18. 18.Which is closest to 993 ÷ 51? (a) 40 (b) 10 (c) 200 (d) 20
  19. 19.If 7 kites cost ₹112, how much do 17 kites cost (in ₹)?
  20. 20.The HCF of two numbers is 7 and their LCM is 147. One of the numbers is 21. What is the other number?
  21. 21.Find the HCF of 70 and 112.
  22. 22.Round 46.26 to one decimal place. =
  23. 23.Find the LCM of 7, 4 and 5.
  24. 24.1/2 + 1/11 =
  25. 25.Round 32457 to the nearest thousand.
  26. 26.Find the third proportional to 9 and 36 (that is, 9 : 36 = 36 : ?).
  27. 27.11 + 11 × 7 − 7 =
  28. 28.A car goes 120 km on 10 litres of petrol. How far can it go on 36 litres (in km)?
  29. 29.25.2 ÷ 4 =
  30. 30.Three temple bells ring every 30, 8 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  31. 31.48 + 9 × 12 − 2 =
  32. 32.What percent of 80 is 64?
  33. 33.25.2 ÷ 6 =
  34. 34.2 painters can paint a school in 5 days. How many days would 5 painters take, working at the same speed?
  35. 35.The ratio of boys to girls in a class is 7 : 5. There are 56 boys. How many girls are there?
  36. 36.Divide ₹99 between Arjun and Pooja in the ratio 2 : 9. How much does Arjun get (in ₹)?
  37. 37.Find the HCF of 45 and 40.
  38. 38.If 4 kg of rice costs ₹140, how many kg can you buy for ₹245?
  39. 39.7/12 − 1/10 =
  40. 40.11 : 14 = 88 : ?

Answer key

  1. 5
  2. 63
  3. 3377
  4. 42
  5. 3
  6. 120
  7. 2
  8. 68.7
  9. 5
  10. 60
  11. 32
  12. 119
  13. 20
  14. 4
  15. 18
  16. 54
  17. 120
  18. 20
  19. 272
  20. 49
  21. 14
  22. 46.3
  23. 140
  24. 13/22
  25. 32000
  26. 144
  27. 81
  28. 432
  29. 6.3
  30. 120
  31. 154
  32. 80
  33. 4.2
  34. 2
  35. 40
  36. 18
  37. 5
  38. 7
  39. 29/60
  40. 112

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