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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 603 · 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.How many factors does 55 have?
  2. 2.Divide ₹180 between Tara and Rahul in the ratio 1 : 9. How much does Tara get (in ₹)?
  3. 3.Find the LCM of 4, 8 and 7.
  4. 4.Three temple bells ring every 24, 5 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  5. 5.150% of a number is 27. What is the number?
  6. 6.What is 4/7 of 119 litres?
  7. 7.7/8 + 8/10 =
  8. 8.The HCF of two numbers is 2 and their LCM is 144. One of the numbers is 16. What is the other number?
  9. 9.2/3 − 3/6 =
  10. 10.Two tanks hold 175 litres and 200 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  11. 11.5.1 × 2 =
  12. 12.Round 52.63 to one decimal place. =
  13. 13.If 2 kg of rice costs ₹110, how many kg can you buy for ₹330?
  14. 14.The ratio of boys to girls in a class is 6 : 7. There are 42 boys. How many girls are there?
  15. 15.Round 58.17 to one decimal place. =
  16. 16.6 × (11 − 4) + 42 ÷ 7 =
  17. 17.Sneha takes 75 seconds and Nisha takes 45 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?
  18. 18.6 painters can paint a school in 21 days. How many days would 7 painters take, working at the same speed?
  19. 19.Round 74.32 to one decimal place. =
  20. 20.Dev scored 16 marks out of 80 in a test. What percentage did Dev score?
  21. 21.What is the smallest number you must take away from 400 so that it divides exactly by 11?
  22. 22.Which is closest to 896 + 802 + 199? (a) 2100 (b) 1900 (c) 1800 (d) 2000
  23. 23.(11 + 20) × 8 − 26 =
  24. 24.5.82 + 7.5 =
  25. 25.Two tanks hold 90 litres and 20 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  26. 26.If 7 kg of rice costs ₹630, how many kg can you buy for ₹1350?
  27. 27.6/11 + 8/12 =
  28. 28.The HCF of two numbers is 8 and their LCM is 288. One of the numbers is 32. What is the other number?
  29. 29.19 + 2 × 5 − 3 =
  30. 30.Which of these numbers divides exactly by 8? (a) 5002 (b) 1709 (c) 3161 (d) 2136
  31. 31.Three temple bells ring every 30, 8 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  32. 32.A hall floor is 350 cm long and 250 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  33. 33.Divide ₹238 between Aarav and Karan in the ratio 2 : 5. How much does Karan get (in ₹)?
  34. 34.Write 3/20 as a percent.
  35. 35.If 6 pens cost ₹36, how much do 11 pens cost (in ₹)?
  36. 36.Two tanks hold 90 litres and 105 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  37. 37.What is 4/7 of 91 km?
  38. 38.What is 3/7 of 77 litres?
  39. 39.Which of these numbers divides exactly by 11? (a) 2868 (b) 2087 (c) 6805 (d) 7810
  40. 40.A car goes 220 km on 11 litres of petrol. How far can it go on 23 litres (in km)?

Answer key

  1. 4
  2. 18
  3. 56
  4. 120
  5. 18
  6. 68
  7. 67/40
  8. 18
  9. 1/6
  10. 25
  11. 10.2
  12. 52.6
  13. 6
  14. 49
  15. 58.2
  16. 48
  17. 225
  18. 18
  19. 74.3
  20. 20
  21. 4
  22. 1900
  23. 222
  24. 13.32
  25. 10
  26. 15
  27. 40/33
  28. 72
  29. 26
  30. 2136
  31. 120
  32. 35
  33. 170
  34. 15
  35. 66
  36. 15
  37. 52
  38. 33
  39. 7810
  40. 460

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