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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 59 · 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.Find the LCM of 28 and 20.
  2. 2.How many factors does 35 have?
  3. 3.5 : 6 = 35 : ?
  4. 4.Two tanks hold 90 litres and 60 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  5. 5.If 7 pens cost ₹378, how much do 15 pens cost (in ₹)?
  6. 6.Three temple bells ring every 30, 10 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  7. 7.Three temple bells ring every 12, 24 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  8. 8.Which is closest to 899 + 403 + 396? (a) 1800 (b) 1700 (c) 1900 (d) 1600
  9. 9.1/5 × 2/6 =
  10. 10.3/4 − 1/5 =
  11. 11.If 6 kg of rice costs ₹318, how many kg can you buy for ₹212?
  12. 12.If 12 kites cost ₹228, how much do 3 kites cost (in ₹)?
  13. 13.Farhan takes 75 seconds and Ishaan takes 30 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?
  14. 14.8 painters can paint a school in 24 days. How many days would 4 painters take, working at the same speed?
  15. 15.9.6 × 3 =
  16. 16.Find the third proportional to 4 and 8 (that is, 4 : 8 = 8 : ?).
  17. 17.Saanvi takes 80 seconds and Arjun takes 90 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.Which of these numbers divides exactly by 11? (a) 2367 (b) 3795 (c) 3156 (d) 6429
  19. 19.108 ÷ 9 × 7 + 15 =
  20. 20.21 + 2 × 3 − 2 =
  21. 21.Which of these numbers divides exactly by 8? (a) 4087 (b) 6829 (c) 9456 (d) 9411
  22. 22.What percent of 40 is 10?
  23. 23.Three temple bells ring every 24, 30 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  24. 24.Round 68.26 to one decimal place. =
  25. 25.5.01 + 7.4 =
  26. 26.4 : 5 = 28 : ?
  27. 27.Zoya scored 12 marks out of 25 in a test. What percentage did Zoya score?
  28. 28.150% of a number is 585. What is the number?
  29. 29.Divide ₹477 between Zoya and Sneha in the ratio 1 : 8. How much does Sneha get (in ₹)?
  30. 30.45 ÷ 5 × 3 + 5 =
  31. 31.If 5 kg of rice costs ₹260, how many kg can you buy for ₹780?
  32. 32.38.5 ÷ 7 =
  33. 33.The ratio of boys to girls in a class is 5 : 8. There are 15 boys. How many girls are there?
  34. 34.(3 + 13) × 4 − 16 =
  35. 35.What is the smallest number you must add to 447 so that it divides exactly by 11?
  36. 36.The HCF of two numbers is 4 and their LCM is 24. One of the numbers is 8. What is the other number?
  37. 37.Divide ₹767 between Meera and Vivaan in the ratio 5 : 8. How much does Vivaan get (in ₹)?
  38. 38.29 + 9 × 9 − 26 =
  39. 39.Which is closest to 303 × 48? (Round each number first.) (a) 30000 (b) 150000 (c) 1500 (d) 15000
  40. 40.Two tanks hold 10 litres and 15 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?

Answer key

  1. 140
  2. 4
  3. 42
  4. 30
  5. 810
  6. 90
  7. 72
  8. 1700
  9. 1/15
  10. 11/20
  11. 4
  12. 57
  13. 150
  14. 48
  15. 28.8
  16. 16
  17. 720
  18. 3795
  19. 99
  20. 25
  21. 9456
  22. 25
  23. 120
  24. 68.3
  25. 12.41
  26. 35
  27. 48
  28. 390
  29. 424
  30. 32
  31. 15
  32. 5.5
  33. 24
  34. 48
  35. 4
  36. 12
  37. 472
  38. 84
  39. 15000
  40. 5

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