← Practice: number skills lesson New set →

Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 467 · 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.Priya takes 50 seconds and Arjun takes 75 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?
  2. 2.Which is closest to 499 × 62? (Round each number first.) (a) 3000 (b) 300000 (c) 60000 (d) 30000
  3. 3.2 painters can paint a school in 24 days. How many days would 4 painters take, working at the same speed?
  4. 4.22 + 2 × 2 − 9 =
  5. 5.Round 72.09 to one decimal place. =
  6. 6.Round 25416 to the nearest hundred.
  7. 7.Divide ₹160 between Saanvi and Kabir in the ratio 1 : 7. How much does Kabir get (in ₹)?
  8. 8.What is 150% of 60?
  9. 9.Find the LCM of 28 and 8.
  10. 10.Sneha scored 35 marks out of 50 in a test. What percentage did Sneha score?
  11. 11.Two tanks hold 315 litres and 225 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  12. 12.16 ÷ 4 × 4 + 2 =
  13. 13.9 : 15 = 27 : ?
  14. 14.1/2 of 24 + 4 × 2 =
  15. 15.How many factors does 100 have?
  16. 16.Write 11/20 as a percent.
  17. 17.Find the HCF of 18 and 42.
  18. 18.Two tanks hold 35 litres and 15 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  19. 19.11 : 8 = 99 : ?
  20. 20.6 painters can paint a school in 29 days. How many days would 3 painters take, working at the same speed?
  21. 21.The ratio of boys to girls in a class is 8 : 7. There are 40 boys. How many girls are there?
  22. 22.The HCF of two numbers is 7 and their LCM is 42. One of the numbers is 21. What is the other number?
  23. 23.Find the LCM of 24 and 28.
  24. 24.150% of a number is 585. What is the number?
  25. 25.How many factors does 90 have?
  26. 26.If 4 erasers cost ₹44, how much do 8 erasers cost (in ₹)?
  27. 27.The ratio of boys to girls in a class is 1 : 7. There are 3 boys. How many girls are there?
  28. 28.What is 5/8 of 168 students?
  29. 29.Which is closest to 304 × 81? (Round each number first.) (a) 24000 (b) 48000 (c) 240000 (d) 2400
  30. 30.Which is closest to 104 + 400 + 202? (a) 700 (b) 800 (c) 600 (d) 900
  31. 31.Three temple bells ring every 9, 30 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  32. 32.The ratio of boys to girls in a class is 7 : 5. There are 63 boys. How many girls are there?
  33. 33.The HCF of two numbers is 5 and their LCM is 175. One of the numbers is 25. What is the other number?
  34. 34.How many factors does 37 have?
  35. 35.How many factors does 84 have?
  36. 36.(18 + 6) × 6 − 7 =
  37. 37.4 × (11 − 6) + 45 ÷ 5 =
  38. 38.Divide ₹350 between Diya and Rahul in the ratio 3 : 4. How much does Rahul get (in ₹)?
  39. 39.What is 7/9 of 54 students?
  40. 40.What is the smallest number you must take away from 309 so that it divides exactly by 9?

Answer key

  1. 150
  2. 30000
  3. 12
  4. 17
  5. 72.1
  6. 25400
  7. 140
  8. 90
  9. 56
  10. 70
  11. 45
  12. 18
  13. 45
  14. 20
  15. 9
  16. 55
  17. 6
  18. 5
  19. 72
  20. 58
  21. 35
  22. 14
  23. 168
  24. 390
  25. 12
  26. 88
  27. 21
  28. 105
  29. 24000
  30. 700
  31. 90
  32. 45
  33. 35
  34. 2
  35. 12
  36. 137
  37. 29
  38. 200
  39. 42
  40. 3

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