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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 8 · 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 3 and their LCM is 60. One of the numbers is 15. What is the other number?
  2. 2.37 − 24 ÷ 4 × 5 =
  3. 3.If 4 kg of rice costs ₹132, how many kg can you buy for ₹165?
  4. 4.Which of these numbers divides exactly by 6? (a) 9610 (b) 2978 (c) 6006 (d) 4310
  5. 5.A hall floor is 100 cm long and 40 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  6. 6.Three temple bells ring every 4, 5 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  7. 7.Which of these numbers divides exactly by 4? (a) 7727 (b) 4378 (c) 5548 (d) 7622
  8. 8.What percent of 20 is 2?
  9. 9.What is the smallest number you must take away from 878 so that it divides exactly by 13?
  10. 10.32 ÷ 8 × 3 + 4 =
  11. 11.Find the smallest number bigger than 8 that leaves a remainder of 1 when divided by 8, 4 or 5.
  12. 12.3 : 2 = 24 : ?
  13. 13.A hostel has enough food for 10 students for 29 days. How many days will the same food last for 5 students?
  14. 14.If 2 erasers cost ₹72, how much do 19 erasers cost (in ₹)?
  15. 15.The ratio of boys to girls in a class is 2 : 1. There are 4 boys. How many girls are there?
  16. 16.5/6 − 3/7 =
  17. 17.The HCF of two numbers is 8 and their LCM is 80. One of the numbers is 16. What is the other number?
  18. 18.A hall floor is 420 cm long and 240 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  19. 19.4.49 + 8.3 =
  20. 20.Find the HCF of 30 and 12.
  21. 21.48 + 12 × 11 − 8 =
  22. 22.A hall floor is 175 cm long and 125 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  23. 23.3/5 of 60 + 6 × 7 =
  24. 24.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?
  25. 25.The HCF of two numbers is 2 and their LCM is 112. One of the numbers is 14. What is the other number?
  26. 26.If 10 cricket balls cost ₹180, how much do 11 cricket balls cost (in ₹)?
  27. 27.12 + 12 × 7 − 3 =
  28. 28.3.03 + 1.8 =
  29. 29.What is the smallest number you must take away from 545 so that it divides exactly by 4?
  30. 30.How many factors does 37 have?
  31. 31.The ratio of boys to girls in a class is 1 : 4. There are 6 boys. How many girls are there?
  32. 32.How many factors does 71 have?
  33. 33.10 painters can paint a school in 14 days. How many days would 7 painters take, working at the same speed?
  34. 34.Find the LCM of 6 and 10.
  35. 35.2/4 × 1/3 =
  36. 36.A hall floor is 350 cm long and 300 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  37. 37.Find the LCM of 7 and 2.
  38. 38.2/3 of 30 + 8 × 6 =
  39. 39.A hostel has enough food for 6 students for 27 days. How many days will the same food last for 3 students?
  40. 40.What is 3/4 of 32 km?

Answer key

  1. 12
  2. 7
  3. 5
  4. 6006
  5. 10
  6. 20
  7. 5548
  8. 10
  9. 7
  10. 16
  11. 41
  12. 16
  13. 58
  14. 684
  15. 2
  16. 17/42
  17. 40
  18. 28
  19. 12.79
  20. 6
  21. 172
  22. 35
  23. 78
  24. 30
  25. 16
  26. 198
  27. 93
  28. 4.83
  29. 1
  30. 2
  31. 24
  32. 2
  33. 20
  34. 30
  35. 1/6
  36. 42
  37. 14
  38. 68
  39. 54
  40. 24

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