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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 291 · 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. 1.7 painters can paint a school in 16 days. How many days would 8 painters take, working at the same speed?
  2. 2.A car goes 132 km on 12 litres of petrol. How far can it go on 37 litres (in km)?
  3. 3.44 − 48 ÷ 6 × 4 =
  4. 4.Divide ₹342 between Diya and Sneha in the ratio 4 : 5. How much does Diya get (in ₹)?
  5. 5.What is 1/2 of 56 litres?
  6. 6.Find the third proportional to 4 and 12 (that is, 4 : 12 = 12 : ?).
  7. 7.48.6 ÷ 9 =
  8. 8.Divide ₹153 between Ishaan and Ananya in the ratio 2 : 7. How much does Ishaan get (in ₹)?
  9. 9.A car goes 18 km on 2 litres of petrol. How far can it go on 24 litres (in km)?
  10. 10.10 + 9 × 11 − 2 =
  11. 11.The ratio of boys to girls in a class is 5 : 9. There are 40 boys. How many girls are there?
  12. 12.Find the third proportional to 3 and 9 (that is, 3 : 9 = 9 : ?).
  13. 13.The HCF of two numbers is 3 and their LCM is 36. One of the numbers is 9. What is the other number?
  14. 14.Three temple bells ring every 10, 15 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  15. 15.Find the LCM of 18 and 21.
  16. 16.17 + 9 × 4 − 3 =
  17. 17.Find the LCM of 14, 7 and 3.
  18. 18.What percent of 20 is 5?
  19. 19.Two tanks hold 350 litres and 200 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  20. 20.If 6 kg of rice costs ₹456, how many kg can you buy for ₹1140?
  21. 21.Rahul scored 13 marks out of 25 in a test. What percentage did Rahul score?
  22. 22.What is 80% of 390?
  23. 23.Which is closest to 409 ÷ 19? (a) 20 (b) 10 (c) 40 (d) 200
  24. 24.Which is closest to 497 + 301 + 495? (a) 1300 (b) 1500 (c) 1200 (d) 1400
  25. 25.Nisha takes 40 seconds and Arjun takes 36 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?
  26. 26.What is 20% of 60?
  27. 27.What is 1/7 of 91 litres?
  28. 28.Find the LCM of 15 and 27.
  29. 29.Which is closest to 1805 ÷ 19? (a) 45 (b) 90 (c) 900 (d) 180
  30. 30.If 8 kg of rice costs ₹200, how many kg can you buy for ₹275?
  31. 31.Round 70.41 to one decimal place. =
  32. 32.The HCF of two numbers is 2 and their LCM is 40. One of the numbers is 10. What is the other number?
  33. 33.The HCF of two numbers is 2 and their LCM is 36. One of the numbers is 18. What is the other number?
  34. 34.If 11 pencil boxes cost ₹539, how much do 2 pencil boxes cost (in ₹)?
  35. 35.Find the LCM of 42 and 30.
  36. 36.4.01 + 4.8 =
  37. 37.A hall floor is 400 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  38. 38.Divide ₹180 between Diya and Meera in the ratio 1 : 8. How much does Diya get (in ₹)?
  39. 39.How many factors does 91 have?
  40. 40.The ratio of boys to girls in a class is 6 : 1. There are 60 boys. How many girls are there?

Answer key

  1. 14
  2. 407
  3. 12
  4. 152
  5. 28
  6. 36
  7. 5.4
  8. 34
  9. 216
  10. 107
  11. 72
  12. 27
  13. 12
  14. 30
  15. 126
  16. 50
  17. 42
  18. 25
  19. 50
  20. 15
  21. 52
  22. 312
  23. 20
  24. 1300
  25. 360
  26. 12
  27. 13
  28. 135
  29. 90
  30. 11
  31. 70.4
  32. 8
  33. 4
  34. 98
  35. 210
  36. 8.81
  37. 24
  38. 20
  39. 4
  40. 10

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