← Practice: number skills lesson New set →

Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 285 · 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.(17 + 9) × 8 − 25 =
  2. 2.How many factors does 22 have?
  3. 3.Which is closest to 902 × 29? (Round each number first.) (a) 54000 (b) 2700 (c) 270000 (d) 27000
  4. 4.The HCF of two numbers is 9 and their LCM is 54. One of the numbers is 27. What is the other number?
  5. 5.6/9 + 6/8 =
  6. 6.Find the LCM of 15 and 6.
  7. 7.How many factors does 40 have?
  8. 8.What is 2/7 of ₹35?
  9. 9.Round 42204 to the nearest ten.
  10. 10.2.6 × 4 =
  11. 11.Round 59.13 to one decimal place. =
  12. 12.Three temple bells ring every 6, 10 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  13. 13.6 × (25 − 10) + 48 ÷ 4 =
  14. 14.Find the HCF of 48 and 54.
  15. 15.5/9 + 2/10 =
  16. 16.2/5 × 5/10 =
  17. 17.Two tanks hold 50 litres and 75 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  18. 18.The ratio of boys to girls in a class is 3 : 1. There are 24 boys. How many girls are there?
  19. 19.27 − 63 ÷ 7 × 2 =
  20. 20.Find the third proportional to 6 and 30 (that is, 6 : 30 = 30 : ?).
  21. 21.8 painters can paint a school in 8 days. How many days would 2 painters take, working at the same speed?
  22. 22.6 : 11 = 42 : ?
  23. 23.How many factors does 34 have?
  24. 24.The ratio of boys to girls in a class is 2 : 7. There are 6 boys. How many girls are there?
  25. 25.Three temple bells ring every 20, 4 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  26. 26.Two tanks hold 75 litres and 120 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  27. 27.50% of a number is 71. What is the number?
  28. 28.29 − 24 ÷ 3 × 2 =
  29. 29.What is 1/3 of ₹33?
  30. 30.What is the smallest number you must add to 197 so that it divides exactly by 3?
  31. 31.What is 80% of 270?
  32. 32.A car goes 72 km on 6 litres of petrol. How far can it go on 33 litres (in km)?
  33. 33.Find the HCF of 40 and 72.
  34. 34.(10 + 6) × 5 − 6 =
  35. 35.A hostel has enough food for 2 students for 8 days. How many days will the same food last for 4 students?
  36. 36.87.3 ÷ 9 =
  37. 37.10 + 3 × 8 − 1 =
  38. 38.9 × (13 − 8) + 12 ÷ 2 =
  39. 39.Find the HCF of 14 and 18.
  40. 40.80% of a number is 108. What is the number?

Answer key

  1. 183
  2. 4
  3. 27000
  4. 18
  5. 17/12
  6. 30
  7. 8
  8. 10
  9. 42200
  10. 10.4
  11. 59.1
  12. 90
  13. 102
  14. 6
  15. 34/45
  16. 1/5
  17. 25
  18. 8
  19. 9
  20. 150
  21. 32
  22. 77
  23. 4
  24. 21
  25. 60
  26. 15
  27. 142
  28. 13
  29. 11
  30. 1
  31. 216
  32. 396
  33. 8
  34. 74
  35. 4
  36. 9.7
  37. 33
  38. 51
  39. 2
  40. 135

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