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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 546 · 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.Find the HCF of 72 and 84.
  2. 2.If 5 kg of rice costs ₹120, how many kg can you buy for ₹216?
  3. 3.A car goes 170 km on 10 litres of petrol. How far can it go on 26 litres (in km)?
  4. 4.How many factors does 91 have?
  5. 5.9 × (12 − 3) + 12 ÷ 2 =
  6. 6.The ratio of boys to girls in a class is 7 : 9. There are 14 boys. How many girls are there?
  7. 7.The HCF of two numbers is 6 and their LCM is 252. One of the numbers is 36. What is the other number?
  8. 8.48 + 6 × 3 − 27 =
  9. 9.If 8 bottles of juice cost ₹136, how much do 4 bottles of juice cost (in ₹)?
  10. 10.Which is closest to 497 + 695 + 299? (a) 1400 (b) 1700 (c) 1600 (d) 1500
  11. 11.What is 10% of 510?
  12. 12.What is 2/5 of 50 kg?
  13. 13.What is 3/7 of 28 litres?
  14. 14.Which is closest to 803 ÷ 19? (a) 20 (b) 40 (c) 80 (d) 400
  15. 15.A hostel has enough food for 6 students for 8 days. How many days will the same food last for 24 students?
  16. 16.If 8 pencil boxes cost ₹336, how much do 10 pencil boxes cost (in ₹)?
  17. 17.What percent of 250 is 235?
  18. 18.Find the HCF of 18 and 15.
  19. 19.Which of these numbers divides exactly by 4? (a) 1962 (b) 3971 (c) 8468 (d) 4115
  20. 20.12 + 7 × 2 − 1 =
  21. 21.What is the smallest number you must add to 409 so that it divides exactly by 7?
  22. 22.1/3 + 9/10 =
  23. 23.Find the HCF of 39 and 104.
  24. 24.A hall floor is 250 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  25. 25.Which is closest to 599 × 89? (Round each number first.) (a) 5400 (b) 108000 (c) 54000 (d) 540000
  26. 26.2/9 × 3/11 =
  27. 27.What is the smallest number you must take away from 371 so that it divides exactly by 8?
  28. 28.Find the third proportional to 5 and 20 (that is, 5 : 20 = 20 : ?).
  29. 29.What is the smallest number you must take away from 645 so that it divides exactly by 7?
  30. 30.The HCF of two numbers is 9 and their LCM is 270. One of the numbers is 45. What is the other number?
  31. 31.Find the HCF of 36 and 24.
  32. 32.The ratio of boys to girls in a class is 9 : 1. There are 72 boys. How many girls are there?
  33. 33.6 painters can paint a school in 22 days. How many days would 22 painters take, working at the same speed?
  34. 34.Round 72.43 to one decimal place. =
  35. 35.49 ÷ 7 × 8 + 11 =
  36. 36.Which is closest to 600 × 51? (Round each number first.) (a) 3000 (b) 300000 (c) 60000 (d) 30000
  37. 37.What is the smallest number you must add to 870 so that it divides exactly by 13?
  38. 38.Three temple bells ring every 10, 12 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  39. 39.Round 89842 to the nearest ten.
  40. 40.6 ÷ 4 =

Answer key

  1. 12
  2. 9
  3. 442
  4. 4
  5. 87
  6. 18
  7. 42
  8. 39
  9. 68
  10. 1500
  11. 51
  12. 20
  13. 12
  14. 40
  15. 2
  16. 420
  17. 94
  18. 3
  19. 8468
  20. 25
  21. 4
  22. 37/30
  23. 13
  24. 15
  25. 54000
  26. 2/33
  27. 3
  28. 80
  29. 1
  30. 54
  31. 12
  32. 8
  33. 6
  34. 72.4
  35. 67
  36. 30000
  37. 1
  38. 60
  39. 89840
  40. 1.5

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