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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 670 · 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 third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
  2. 2.Divide ₹969 between Zoya and Kabir in the ratio 8 : 9. How much does Kabir get (in ₹)?
  3. 3.7.1 × 3 =
  4. 4.Find the HCF of 44 and 55.
  5. 5.5.02 + 6.2 =
  6. 6.Which of these numbers divides exactly by 8? (a) 7035 (b) 9953 (c) 2808 (d) 7974
  7. 7.2 × (24 − 17) + 30 ÷ 3 =
  8. 8.The HCF of two numbers is 6 and their LCM is 126. One of the numbers is 18. What is the other number?
  9. 9.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 8, 15 or 3.
  10. 10.Write 2/5 as a percent.
  11. 11.The HCF of two numbers is 8 and their LCM is 360. One of the numbers is 72. What is the other number?
  12. 12.(11 + 6) × 8 − 21 =
  13. 13.34 − 8 ÷ 4 × 8 =
  14. 14.Find the LCM of 2, 5 and 8.
  15. 15.What is the smallest number you must take away from 982 so that it divides exactly by 3?
  16. 16.What is 25% of 96?
  17. 17.Find the smallest number bigger than 8 that leaves a remainder of 2 when divided by 6, 3 or 8.
  18. 18.8/9 of 36 + 4 × 5 =
  19. 19.What is 5% of 280?
  20. 20.Divide ₹357 between Rahul and Arjun in the ratio 4 : 3. How much does Rahul get (in ₹)?
  21. 21.Which of these numbers divides exactly by 8? (a) 3272 (b) 4156 (c) 4458 (d) 4354
  22. 22.A hostel has enough food for 5 students for 28 days. How many days will the same food last for 20 students?
  23. 23.Aarav takes 36 seconds and Nisha takes 48 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?
  24. 24.Divide ₹105 between Ishaan and Arjun in the ratio 2 : 3. How much does Arjun get (in ₹)?
  25. 25.Round 88.69 to one decimal place. =
  26. 26.Find the HCF of 21 and 14.
  27. 27.Which is closest to 697 × 21? (Round each number first.) (a) 140000 (b) 1400 (c) 14000 (d) 28000
  28. 28.1/5 + 4/11 =
  29. 29.11/12 + 4/9 =
  30. 30.Find the HCF of 15 and 20.
  31. 31.A hall floor is 140 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  32. 32.The ratio of boys to girls in a class is 8 : 1. There are 16 boys. How many girls are there?
  33. 33.The HCF of two numbers is 5 and their LCM is 200. One of the numbers is 40. What is the other number?
  34. 34.1/3 × 1/5 =
  35. 35.Which is closest to 296 + 798 + 601? (a) 1600 (b) 1900 (c) 1800 (d) 1700
  36. 36.What is the smallest number you must add to 576 so that it divides exactly by 7?
  37. 37.Three temple bells ring every 24, 10 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  38. 38.9/11 + 2/3 =
  39. 39.Round 33.12 to one decimal place. =
  40. 40.13.6 ÷ 8 =

Answer key

  1. 32
  2. 513
  3. 21.3
  4. 11
  5. 11.22
  6. 2808
  7. 24
  8. 42
  9. 121
  10. 40
  11. 40
  12. 115
  13. 18
  14. 40
  15. 1
  16. 24
  17. 26
  18. 52
  19. 14
  20. 204
  21. 3272
  22. 7
  23. 144
  24. 63
  25. 88.7
  26. 7
  27. 14000
  28. 31/55
  29. 49/36
  30. 5
  31. 42
  32. 2
  33. 25
  34. 1/15
  35. 1700
  36. 5
  37. 120
  38. 49/33
  39. 33.1
  40. 1.7

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