← Practice: number skills lesson New set →

Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 777 · 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.The HCF of two numbers is 8 and their LCM is 80. One of the numbers is 40. What is the other number?
  2. 2.23 − 48 ÷ 8 × 3 =
  3. 3.The HCF of two numbers is 2 and their LCM is 80. One of the numbers is 10. What is the other number?
  4. 4.A hall floor is 300 cm long and 250 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  5. 5.Find the LCM of 2, 14 and 10.
  6. 6.1/6 of 54 + 8 × 5 =
  7. 7.Two tanks hold 150 litres and 180 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  8. 8.Round 66.33 to one decimal place. =
  9. 9.Round 52702 to the nearest hundred.
  10. 10.If 11 mangoes cost ₹77, how much do 2 mangoes cost (in ₹)?
  11. 11.4 : 14 = 20 : ?
  12. 12.Find the third proportional to 3 and 12 (that is, 3 : 12 = 12 : ?).
  13. 13.2/3 × 3/11 =
  14. 14.How many factors does 82 have?
  15. 15.75% of a number is 21. What is the number?
  16. 16.Find the smallest number bigger than 12 that leaves a remainder of 3 when divided by 12, 9 or 6.
  17. 17.What is 1/2 of 20 kg?
  18. 18.Find the third proportional to 3 and 9 (that is, 3 : 9 = 9 : ?).
  19. 19.37 + 8 × 5 − 20 =
  20. 20.48 ÷ 8 × 5 + 20 =
  21. 21.7/11 − 2/4 =
  22. 22.30% of a number is 165. What is the number?
  23. 23.A car goes 72 km on 6 litres of petrol. How far can it go on 5 litres (in km)?
  24. 24.A hall floor is 315 cm long and 135 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  25. 25.Find the LCM of 18 and 14.
  26. 26.Ananya takes 80 seconds and Rahul 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?
  27. 27.Which is closest to 1592 ÷ 19? (a) 800 (b) 80 (c) 40 (d) 160
  28. 28.The ratio of boys to girls in a class is 7 : 9. There are 56 boys. How many girls are there?
  29. 29.How many factors does 72 have?
  30. 30.7.31 + 9.5 =
  31. 31.4/9 of 45 + 7 × 8 =
  32. 32.7.58 + 4.3 =
  33. 33.31 − 40 ÷ 5 × 3 =
  34. 34.Write 19/25 as a percent.
  35. 35.A car goes 130 km on 10 litres of petrol. How far can it go on 29 litres (in km)?
  36. 36.The ratio of boys to girls in a class is 2 : 9. There are 4 boys. How many girls are there?
  37. 37.If 5 kites cost ₹290, how much do 10 kites cost (in ₹)?
  38. 38.Priya takes 90 seconds and Isha takes 40 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?
  39. 39.Three temple bells ring every 4, 24 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  40. 40.Which of these numbers divides exactly by 3? (a) 7803 (b) 4307 (c) 2482 (d) 6377

Answer key

  1. 16
  2. 5
  3. 16
  4. 30
  5. 70
  6. 49
  7. 30
  8. 66.3
  9. 52700
  10. 14
  11. 70
  12. 48
  13. 2/11
  14. 4
  15. 28
  16. 39
  17. 10
  18. 27
  19. 57
  20. 50
  21. 3/22
  22. 550
  23. 60
  24. 21
  25. 126
  26. 720
  27. 80
  28. 72
  29. 12
  30. 16.81
  31. 76
  32. 11.88
  33. 7
  34. 76
  35. 377
  36. 18
  37. 580
  38. 360
  39. 120
  40. 7803

Free quantitative aptitude lessons, practice and worksheets at talentjr.in/quantitative-aptitude