← Practice: number skills lesson New set →

Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 602 · 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.A hall floor is 420 cm long and 180 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  2. 2.A hall floor is 150 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  3. 3.What is the smallest number you must take away from 303 so that it divides exactly by 7?
  4. 4.What is 5/8 of 64 students?
  5. 5.6 : 4 = 42 : ?
  6. 6.Write 49/50 as a percent.
  7. 7.What percent of 20 is 14?
  8. 8.6.6 × 6 =
  9. 9.The ratio of boys to girls in a class is 1 : 4. There are 9 boys. How many girls are there?
  10. 10.The HCF of two numbers is 4 and their LCM is 112. One of the numbers is 28. What is the other number?
  11. 11.Three temple bells ring every 15, 10 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  12. 12.Round 58.18 to one decimal place. =
  13. 13.What is the smallest number you must take away from 454 so that it divides exactly by 7?
  14. 14.30% of a number is 6. What is the number?
  15. 15.What is the smallest number you must add to 847 so that it divides exactly by 12?
  16. 16.Two tanks hold 175 litres and 125 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  17. 17.Which is closest to 796 × 22? (Round each number first.) (a) 16000 (b) 32000 (c) 160000 (d) 1600
  18. 18.120% of a number is 228. What is the number?
  19. 19.5/10 × 3/8 =
  20. 20.Which of these numbers divides exactly by 3? (a) 9936 (b) 6202 (c) 7895 (d) 6704
  21. 21.How many factors does 69 have?
  22. 22.What is 30% of 330?
  23. 23.Find the third proportional to 3 and 6 (that is, 3 : 6 = 6 : ?).
  24. 24.Aditya takes 40 seconds and Tara takes 60 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?
  25. 25.If 3 erasers cost ₹105, how much do 10 erasers cost (in ₹)?
  26. 26.A car goes 18 km on 2 litres of petrol. How far can it go on 40 litres (in km)?
  27. 27.If 8 kg of rice costs ₹464, how many kg can you buy for ₹580?
  28. 28.Find the HCF of 49 and 14.
  29. 29.Two tanks hold 60 litres and 90 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  30. 30.The HCF of two numbers is 4 and their LCM is 224. One of the numbers is 28. What is the other number?
  31. 31.How many factors does 57 have?
  32. 32.32 ÷ 8 × 7 + 13 =
  33. 33.6 : 7 = 12 : ?
  34. 34.Which of these numbers divides exactly by 8? (a) 3028 (b) 8637 (c) 4040 (d) 9606
  35. 35.43 + 10 × 4 − 26 =
  36. 36.9 × (13 − 7) + 18 ÷ 2 =
  37. 37.What is the smallest number you must add to 119 so that it divides exactly by 11?
  38. 38.24 ÷ 8 × 6 + 30 =
  39. 39.The HCF of two numbers is 3 and their LCM is 108. One of the numbers is 27. What is the other number?
  40. 40.A car goes 57 km on 3 litres of petrol. How far can it go on 11 litres (in km)?

Answer key

  1. 21
  2. 10
  3. 2
  4. 40
  5. 28
  6. 98
  7. 70
  8. 39.6
  9. 36
  10. 16
  11. 90
  12. 58.2
  13. 6
  14. 20
  15. 5
  16. 25
  17. 16000
  18. 190
  19. 3/16
  20. 9936
  21. 4
  22. 99
  23. 12
  24. 120
  25. 350
  26. 360
  27. 10
  28. 7
  29. 30
  30. 32
  31. 4
  32. 41
  33. 14
  34. 4040
  35. 57
  36. 63
  37. 2
  38. 48
  39. 12
  40. 209

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