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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 697 · 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.What is the smallest number you must take away from 589 so that it divides exactly by 9?
  2. 2.Find the third proportional to 4 and 20 (that is, 4 : 20 = 20 : ?).
  3. 3.If 3 pens cost ₹144, how much do 16 pens cost (in ₹)?
  4. 4.What is 1/3 of 51 kg?
  5. 5.50% of a number is 250. What is the number?
  6. 6.Which is closest to 2408 ÷ 31? (a) 800 (b) 160 (c) 80 (d) 40
  7. 7.Two tanks hold 240 litres and 90 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  8. 8.Round 69.22 to one decimal place. =
  9. 9.6 : 4 = 30 : ?
  10. 10.7.1 × 4 =
  11. 11.Which of these numbers divides exactly by 9? (a) 3864 (b) 2360 (c) 8811 (d) 4729
  12. 12.A car goes 85 km on 5 litres of petrol. How far can it go on 4 litres (in km)?
  13. 13.Two tanks hold 50 litres and 70 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  14. 14.5 : 14 = 20 : ?
  15. 15.1/2 of 4 + 3 × 5 =
  16. 16.30 ÷ 3 × 7 + 7 =
  17. 17.A car goes 45 km on 3 litres of petrol. How far can it go on 28 litres (in km)?
  18. 18.Find the HCF of 39 and 26.
  19. 19.Find the HCF of 40 and 24.
  20. 20.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 6, 10 or 12.
  21. 21.How many factors does 71 have?
  22. 22.Arjun scored 32 marks out of 80 in a test. What percentage did Arjun score?
  23. 23.Two tanks hold 40 litres and 70 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  24. 24.A car goes 57 km on 3 litres of petrol. How far can it go on 30 litres (in km)?
  25. 25.How many factors does 73 have?
  26. 26.If 2 kg of rice costs ₹88, how many kg can you buy for ₹352?
  27. 27.Find the smallest number bigger than 9 that leaves a remainder of 1 when divided by 3, 9 or 4.
  28. 28.Find the HCF of 40 and 45.
  29. 29.11/12 + 1/4 =
  30. 30.Rahul takes 60 seconds and Ananya takes 80 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?
  31. 31.65 − 32 ÷ 4 × 8 =
  32. 32.Divide ₹564 between Diya and Arjun in the ratio 7 : 5. How much does Arjun get (in ₹)?
  33. 33.A hall floor is 280 cm long and 160 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  34. 34.The HCF of two numbers is 5 and their LCM is 100. One of the numbers is 20. What is the other number?
  35. 35.Three temple bells ring every 4, 30 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  36. 36.A hall floor is 140 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  37. 37.A car goes 160 km on 8 litres of petrol. How far can it go on 5 litres (in km)?
  38. 38.What is the smallest number you must take away from 284 so that it divides exactly by 3?
  39. 39.50 + 8 × 5 − 8 =
  40. 40.8/9 − 1/6 =

Answer key

  1. 4
  2. 100
  3. 768
  4. 17
  5. 500
  6. 80
  7. 30
  8. 69.2
  9. 20
  10. 28.4
  11. 8811
  12. 68
  13. 10
  14. 56
  15. 17
  16. 77
  17. 420
  18. 13
  19. 8
  20. 62
  21. 2
  22. 40
  23. 10
  24. 570
  25. 2
  26. 8
  27. 37
  28. 5
  29. 7/6
  30. 240
  31. 1
  32. 235
  33. 28
  34. 25
  35. 120
  36. 42
  37. 100
  38. 2
  39. 82
  40. 13/18

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