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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 717 · 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.What is the smallest number you must add to 617 so that it divides exactly by 4?
  2. 2.Find the smallest number bigger than 6 that leaves a remainder of 1 when divided by 4, 6 or 3.
  3. 3.4.28 + 3.9 =
  4. 4.Which is closest to 801 ÷ 21? (a) 20 (b) 40 (c) 80 (d) 400
  5. 5.3/7 of 35 + 9 × 6 =
  6. 6.What is the smallest number you must take away from 597 so that it divides exactly by 7?
  7. 7.If 2 erasers cost ₹116, how much do 4 erasers cost (in ₹)?
  8. 8.What is 7/10 of ₹40?
  9. 9.Three temple bells ring every 15, 12 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  10. 10.Three temple bells ring every 9, 4 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  11. 11.Find the third proportional to 5 and 20 (that is, 5 : 20 = 20 : ?).
  12. 12.Round 30114 to the nearest ten.
  13. 13.Round 46672 to the nearest ten.
  14. 14.What percent of 80 is 16?
  15. 15.Find the third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
  16. 16.The ratio of boys to girls in a class is 2 : 9. There are 20 boys. How many girls are there?
  17. 17.5/8 × 1/4 =
  18. 18.The HCF of two numbers is 2 and their LCM is 72. One of the numbers is 18. What is the other number?
  19. 19.Which is closest to 796 × 51? (Round each number first.) (a) 80000 (b) 4000 (c) 400000 (d) 40000
  20. 20.If 6 pencil boxes cost ₹282, how much do 5 pencil boxes cost (in ₹)?
  21. 21.Find the HCF of 16 and 20.
  22. 22.Divide ₹230 between Ananya and Diya in the ratio 9 : 1. How much does Ananya get (in ₹)?
  23. 23.What is 1/3 of 78 litres?
  24. 24.What percent of 25 is 8?
  25. 25.Which is closest to 703 × 28? (Round each number first.) (a) 2100 (b) 210000 (c) 21000 (d) 42000
  26. 26.What is the smallest number you must take away from 682 so that it divides exactly by 9?
  27. 27.If 11 pencil boxes cost ₹143, how much do 15 pencil boxes cost (in ₹)?
  28. 28.Three temple bells ring every 10, 15 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  29. 29.What percent of 20 is 15?
  30. 30.4/10 + 5/11 =
  31. 31.What percent of 200 is 70?
  32. 32.9 painters can paint a school in 7 days. How many days would 21 painters take, working at the same speed?
  33. 33.Find the HCF of 8 and 28.
  34. 34.Round 33126 to the nearest hundred.
  35. 35.Divide ₹369 between Meera and Dev in the ratio 5 : 4. How much does Dev get (in ₹)?
  36. 36.If 9 kg of rice costs ₹783, how many kg can you buy for ₹348?
  37. 37.If 8 kg of rice costs ₹472, how many kg can you buy for ₹118?
  38. 38.Two tanks hold 405 litres and 225 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  39. 39.Find the HCF of 10 and 6.
  40. 40.Find the third proportional to 6 and 18 (that is, 6 : 18 = 18 : ?).

Answer key

  1. 3
  2. 13
  3. 8.18
  4. 40
  5. 69
  6. 2
  7. 232
  8. 28
  9. 60
  10. 36
  11. 80
  12. 30110
  13. 46670
  14. 20
  15. 32
  16. 90
  17. 5/32
  18. 8
  19. 40000
  20. 235
  21. 4
  22. 207
  23. 26
  24. 32
  25. 21000
  26. 7
  27. 195
  28. 60
  29. 75
  30. 47/55
  31. 35
  32. 3
  33. 4
  34. 33100
  35. 164
  36. 4
  37. 2
  38. 45
  39. 2
  40. 54

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