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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 86 · 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.Which is closest to 601 + 199 + 696? (a) 1600 (b) 1400 (c) 1700 (d) 1500
  2. 2.How many factors does 87 have?
  3. 3.1.52 + 3.4 =
  4. 4.Which is closest to 97 + 204 + 105? (a) 600 (b) 300 (c) 400 (d) 500
  5. 5.Round 56744 to the nearest thousand.
  6. 6.Find the LCM of 7 and 4.
  7. 7.What percent of 20 is 15?
  8. 8.32 + 2 × 9 − 17 =
  9. 9.Which is closest to 1409 ÷ 19? (a) 700 (b) 70 (c) 140 (d) 35
  10. 10.How many factors does 31 have?
  11. 11.What is the smallest number you must take away from 976 so that it divides exactly by 6?
  12. 12.Which is closest to 896 + 298 + 101? (a) 1200 (b) 1500 (c) 1400 (d) 1300
  13. 13.What is the smallest number you must take away from 982 so that it divides exactly by 12?
  14. 14.What is the smallest number you must add to 734 so that it divides exactly by 7?
  15. 15.A hostel has enough food for 12 students for 17 days. How many days will the same food last for 4 students?
  16. 16.5/9 of 36 + 9 × 8 =
  17. 17.6.5 × 4 =
  18. 18.Find the LCM of 12 and 8.
  19. 19.27 ÷ 9 × 6 + 1 =
  20. 20.3.6 × 4 =
  21. 21.2/3 + 2/4 =
  22. 22.8/10 − 5/7 =
  23. 23.Round 38.11 to one decimal place. =
  24. 24.What is the smallest number you must take away from 610 so that it divides exactly by 9?
  25. 25.What is 1/6 of 138 km?
  26. 26.The HCF of two numbers is 4 and their LCM is 24. One of the numbers is 12. What is the other number?
  27. 27.Divide ₹164 between Dev and Tara in the ratio 3 : 1. How much does Tara get (in ₹)?
  28. 28.What is the smallest number you must take away from 748 so that it divides exactly by 8?
  29. 29.A hall floor is 100 cm long and 75 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  30. 30.Find the third proportional to 6 and 24 (that is, 6 : 24 = 24 : ?).
  31. 31.What is the smallest number you must take away from 468 so that it divides exactly by 7?
  32. 32.Find the HCF of 12 and 14.
  33. 33.The ratio of boys to girls in a class is 8 : 5. There are 72 boys. How many girls are there?
  34. 34.What is the smallest number you must add to 677 so that it divides exactly by 9?
  35. 35.Round 54.81 to one decimal place. =
  36. 36.48 + 11 × 10 − 10 =
  37. 37.1.23 + 2.1 =
  38. 38.Find the smallest number bigger than 9 that leaves a remainder of 1 when divided by 4, 8 or 9.
  39. 39.Which is closest to 304 + 697 + 196? (a) 1300 (b) 1200 (c) 1400 (d) 1100
  40. 40.(8 + 4) × 5 − 25 =

Answer key

  1. 1500
  2. 4
  3. 4.92
  4. 400
  5. 57000
  6. 28
  7. 75
  8. 33
  9. 70
  10. 2
  11. 4
  12. 1300
  13. 10
  14. 1
  15. 51
  16. 92
  17. 26
  18. 24
  19. 19
  20. 14.4
  21. 7/6
  22. 3/35
  23. 38.1
  24. 7
  25. 23
  26. 8
  27. 41
  28. 4
  29. 12
  30. 96
  31. 6
  32. 2
  33. 45
  34. 7
  35. 54.8
  36. 148
  37. 3.33
  38. 73
  39. 1200
  40. 35

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