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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 680 · 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. 1.4/7 × 7/10 =
  2. 2.Round 28.32 to one decimal place. =
  3. 3.Isha takes 40 seconds and Meera takes 60 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.Which is closest to 593 ÷ 31? (a) 200 (b) 20 (c) 10 (d) 40
  5. 5.If 3 kg of rice costs ₹69, how many kg can you buy for ₹299?
  6. 6.1/4 + 11/12 =
  7. 7.2.33 + 7.5 =
  8. 8.What is 1/3 of 72 students?
  9. 9.How many factors does 91 have?
  10. 10.Which is closest to 900 + 898 + 405? (a) 2300 (b) 2100 (c) 2400 (d) 2200
  11. 11.A hall floor is 225 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  12. 12.5 painters can paint a school in 13 days. How many days would 13 painters take, working at the same speed?
  13. 13.Find the HCF of 45 and 27.
  14. 14.Three temple bells ring every 6, 10 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  15. 15.Find the LCM of 9, 15 and 2.
  16. 16.Three temple bells ring every 6, 15 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  17. 17.The HCF of two numbers is 2 and their LCM is 126. One of the numbers is 18. What is the other number?
  18. 18.The ratio of boys to girls in a class is 8 : 1. There are 56 boys. How many girls are there?
  19. 19.5.9 × 6 =
  20. 20.10 : 3 = 60 : ?
  21. 21.7.9 × 3 =
  22. 22.3/4 − 1/2 =
  23. 23.If 4 cricket balls cost ₹184, how much do 20 cricket balls cost (in ₹)?
  24. 24.The ratio of boys to girls in a class is 5 : 9. There are 10 boys. How many girls are there?
  25. 25.If 2 kg of rice costs ₹54, how many kg can you buy for ₹324?
  26. 26.2/5 × 7/9 =
  27. 27.38 − 14 ÷ 2 × 4 =
  28. 28.Which is closest to 796 + 799 + 700? (a) 2300 (b) 2500 (c) 2200 (d) 2400
  29. 29.Which of these numbers divides exactly by 4? (a) 2755 (b) 4564 (c) 1333 (d) 6726
  30. 30.24 ÷ 6 × 5 + 15 =
  31. 31.Divide ₹114 between Zoya and Ananya in the ratio 1 : 2. How much does Ananya get (in ₹)?
  32. 32.If 6 bottles of juice cost ₹186, how much do 20 bottles of juice cost (in ₹)?
  33. 33.What percent of 25 is 14?
  34. 34.The HCF of two numbers is 7 and their LCM is 126. One of the numbers is 14. What is the other number?
  35. 35.Find the third proportional to 9 and 27 (that is, 9 : 27 = 27 : ?).
  36. 36.Divide ₹264 between Diya and Farhan in the ratio 7 : 1. How much does Farhan get (in ₹)?
  37. 37.Find the third proportional to 6 and 18 (that is, 6 : 18 = 18 : ?).
  38. 38.Two tanks hold 90 litres and 135 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  39. 39.What is the smallest number you must add to 947 so that it divides exactly by 8?
  40. 40.A car goes 66 km on 3 litres of petrol. How far can it go on 36 litres (in km)?

Answer key

  1. 2/5
  2. 28.3
  3. 120
  4. 20
  5. 13
  6. 7/6
  7. 9.83
  8. 24
  9. 4
  10. 2200
  11. 10
  12. 5
  13. 9
  14. 60
  15. 90
  16. 60
  17. 14
  18. 7
  19. 35.4
  20. 18
  21. 23.7
  22. 1/4
  23. 920
  24. 18
  25. 12
  26. 14/45
  27. 10
  28. 2300
  29. 4564
  30. 35
  31. 76
  32. 620
  33. 56
  34. 63
  35. 81
  36. 33
  37. 54
  38. 45
  39. 5
  40. 792

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