← Practice: number skills lesson New set →

Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 440 · 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. 1.6 painters can paint a school in 15 days. How many days would 2 painters take, working at the same speed?
  2. 2.(8 + 10) × 6 − 25 =
  3. 3.Which is closest to 198 + 696 + 304? (a) 1400 (b) 1100 (c) 1300 (d) 1200
  4. 4.150% of a number is 900. What is the number?
  5. 5.2 × (17 − 3) + 18 ÷ 9 =
  6. 6.Which is closest to 500 × 22? (Round each number first.) (a) 1000 (b) 20000 (c) 100000 (d) 10000
  7. 7.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 12, 3 or 15.
  8. 8.A hall floor is 60 cm long and 40 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  9. 9.8 : 2 = 16 : ?
  10. 10.A car goes 161 km on 7 litres of petrol. How far can it go on 37 litres (in km)?
  11. 11.47 − 45 ÷ 9 × 9 =
  12. 12.5% of a number is 28. What is the number?
  13. 13.What is 60% of 530?
  14. 14.Find the LCM of 35 and 45.
  15. 15.1/9 × 8/10 =
  16. 16.What percent of 50 is 8?
  17. 17.1/2 of 18 + 3 × 5 =
  18. 18.1/2 of 4 + 3 × 3 =
  19. 19.If 9 kg of rice costs ₹549, how many kg can you buy for ₹671?
  20. 20.Which of these numbers divides exactly by 11? (a) 8729 (b) 9562 (c) 2464 (d) 8438
  21. 21.Find the LCM of 42 and 30.
  22. 22.Which is closest to 701 × 20? (Round each number first.) (a) 1400 (b) 28000 (c) 140000 (d) 14000
  23. 23.Find the LCM of 15, 3 and 10.
  24. 24.Find the LCM of 20 and 16.
  25. 25.Find the LCM of 4 and 5.
  26. 26.The ratio of boys to girls in a class is 5 : 7. There are 50 boys. How many girls are there?
  27. 27.What is the smallest number you must take away from 999 so that it divides exactly by 6?
  28. 28.If 4 kg of rice costs ₹220, how many kg can you buy for ₹385?
  29. 29.Find the third proportional to 9 and 27 (that is, 9 : 27 = 27 : ?).
  30. 30.The HCF of two numbers is 3 and their LCM is 45. One of the numbers is 15. What is the other number?
  31. 31.How many factors does 46 have?
  32. 32.Round 73.19 to one decimal place. =
  33. 33.Find the HCF of 8 and 36.
  34. 34.1/2 − 1/12 =
  35. 35.What percent of 50 is 26?
  36. 36.The ratio of boys to girls in a class is 9 : 4. There are 90 boys. How many girls are there?
  37. 37.Round 33873 to the nearest hundred.
  38. 38.A hall floor is 360 cm long and 225 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  39. 39.6 × (29 − 7) + 24 ÷ 8 =
  40. 40.The HCF of two numbers is 7 and their LCM is 196. One of the numbers is 49. What is the other number?

Answer key

  1. 45
  2. 83
  3. 1200
  4. 600
  5. 30
  6. 10000
  7. 61
  8. 6
  9. 4
  10. 851
  11. 2
  12. 560
  13. 318
  14. 315
  15. 4/45
  16. 16
  17. 24
  18. 11
  19. 11
  20. 2464
  21. 210
  22. 14000
  23. 30
  24. 80
  25. 20
  26. 70
  27. 3
  28. 7
  29. 81
  30. 9
  31. 4
  32. 73.2
  33. 4
  34. 5/12
  35. 52
  36. 40
  37. 33900
  38. 40
  39. 135
  40. 28

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