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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 348 · 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 30, 5 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  2. 2.The HCF of two numbers is 2 and their LCM is 20. One of the numbers is 10. What is the other number?
  3. 3.How many factors does 68 have?
  4. 4.Which is closest to 797 + 595 + 800? (a) 2200 (b) 2100 (c) 2400 (d) 2300
  5. 5.17 + 2 × 9 − 4 =
  6. 6.Priya scored 7 marks out of 25 in a test. What percentage did Priya score?
  7. 7.Divide ₹322 between Dev and Zoya in the ratio 4 : 3. How much does Dev get (in ₹)?
  8. 8.What is 15% of 280?
  9. 9.Three temple bells ring every 10, 6 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  10. 10.Round 43.08 to one decimal place. =
  11. 11.How many factors does 15 have?
  12. 12.4/7 of 84 + 9 × 9 =
  13. 13.15% of a number is 78. What is the number?
  14. 14.What percent of 500 is 355?
  15. 15.3/5 + 2/6 =
  16. 16.What is the smallest number you must take away from 541 so that it divides exactly by 9?
  17. 17.What is the smallest number you must take away from 335 so that it divides exactly by 8?
  18. 18.Find the third proportional to 4 and 8 (that is, 4 : 8 = 8 : ?).
  19. 19.A car goes 156 km on 12 litres of petrol. How far can it go on 19 litres (in km)?
  20. 20.Find the third proportional to 7 and 21 (that is, 7 : 21 = 21 : ?).
  21. 21.If 2 bottles of juice cost ₹90, how much do 4 bottles of juice cost (in ₹)?
  22. 22.1/4 × 1/6 =
  23. 23.2/5 of 35 + 8 × 7 =
  24. 24.9 painters can paint a school in 26 days. How many days would 6 painters take, working at the same speed?
  25. 25.Write 2/5 as a percent.
  26. 26.Find the HCF of 8 and 12.
  27. 27.What is the smallest number you must add to 686 so that it divides exactly by 9?
  28. 28.If 4 kg of rice costs ₹164, how many kg can you buy for ₹123?
  29. 29.Two tanks hold 60 litres and 100 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  30. 30.Which of these numbers divides exactly by 11? (a) 7484 (b) 8360 (c) 1490 (d) 6769
  31. 31.Divide ₹105 between Diya and Aditya in the ratio 5 : 2. How much does Diya get (in ₹)?
  32. 32.Two tanks hold 75 litres and 30 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  33. 33.1.17 + 8.3 =
  34. 34.How many factors does 48 have?
  35. 35.Karan scored 36 marks out of 80 in a test. What percentage did Karan score?
  36. 36.A car goes 210 km on 10 litres of petrol. How far can it go on 33 litres (in km)?
  37. 37.Find the HCF of 36 and 96.
  38. 38.If 2 erasers cost ₹110, how much do 14 erasers cost (in ₹)?
  39. 39.What is 150% of 78?
  40. 40.If 5 cricket balls cost ₹15, how much do 7 cricket balls cost (in ₹)?

Answer key

  1. 60
  2. 4
  3. 6
  4. 2200
  5. 31
  6. 28
  7. 184
  8. 42
  9. 120
  10. 43.1
  11. 4
  12. 129
  13. 520
  14. 71
  15. 14/15
  16. 1
  17. 7
  18. 16
  19. 247
  20. 63
  21. 180
  22. 1/24
  23. 70
  24. 39
  25. 40
  26. 4
  27. 7
  28. 3
  29. 20
  30. 8360
  31. 75
  32. 15
  33. 9.47
  34. 10
  35. 45
  36. 693
  37. 12
  38. 770
  39. 117
  40. 21

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