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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 382 · 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. 1.3.3 × 5 =
  2. 2.What is the smallest number you must take away from 522 so that it divides exactly by 12?
  3. 3.Round 98.61 to one decimal place. =
  4. 4.If 12 notebooks cost ₹216, how much do 3 notebooks cost (in ₹)?
  5. 5.(5 + 6) × 6 − 5 =
  6. 6.Write 1/2 as a percent.
  7. 7.80% of a number is 44. What is the number?
  8. 8.6 : 13 = 12 : ?
  9. 9.Three temple bells ring every 9, 6 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  10. 10.A hall floor is 135 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  11. 11.Three temple bells ring every 12, 10 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  12. 12.How many factors does 25 have?
  13. 13.If 9 kg of rice costs ₹198, how many kg can you buy for ₹44?
  14. 14.Three temple bells ring every 24, 10 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  15. 15.(11 + 2) × 5 − 2 =
  16. 16.A hall floor is 100 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  17. 17.A hall floor is 75 cm long and 50 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  18. 18.9 painters can paint a school in 11 days. How many days would 11 painters take, working at the same speed?
  19. 19.Find the smallest number bigger than 8 that leaves a remainder of 3 when divided by 5, 4 or 8.
  20. 20.Round 46.52 to one decimal place. =
  21. 21.If 4 mangoes cost ₹84, how much do 16 mangoes cost (in ₹)?
  22. 22.A hall floor is 210 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  23. 23.Round 72261 to the nearest thousand.
  24. 24.The HCF of two numbers is 9 and their LCM is 315. One of the numbers is 45. What is the other number?
  25. 25.Which is closest to 1997 ÷ 39? (a) 25 (b) 100 (c) 500 (d) 50
  26. 26.What is the smallest number you must add to 402 so that it divides exactly by 4?
  27. 27.How many factors does 48 have?
  28. 28.18 ÷ 6 × 5 + 11 =
  29. 29.Find the third proportional to 4 and 12 (that is, 4 : 12 = 12 : ?).
  30. 30.42 ÷ 7 × 7 + 20 =
  31. 31.1/2 of 20 + 6 × 6 =
  32. 32.What is the smallest number you must take away from 857 so that it divides exactly by 13?
  33. 33.Find the LCM of 10 and 6.
  34. 34.(16 + 3) × 3 − 29 =
  35. 35.What is the smallest number you must take away from 514 so that it divides exactly by 6?
  36. 36.Find the smallest number bigger than 12 that leaves a remainder of 4 when divided by 5, 12 or 9.
  37. 37.Round 24272 to the nearest thousand.
  38. 38.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 5, 10 or 9.
  39. 39.13 + 3 × 5 − 7 =
  40. 40.What is the smallest number you must add to 121 so that it divides exactly by 6?

Answer key

  1. 16.5
  2. 6
  3. 98.6
  4. 54
  5. 61
  6. 50
  7. 55
  8. 26
  9. 90
  10. 6
  11. 60
  12. 3
  13. 2
  14. 120
  15. 63
  16. 15
  17. 6
  18. 9
  19. 43
  20. 46.5
  21. 336
  22. 21
  23. 72000
  24. 63
  25. 50
  26. 2
  27. 10
  28. 26
  29. 36
  30. 62
  31. 46
  32. 12
  33. 30
  34. 28
  35. 4
  36. 184
  37. 24000
  38. 91
  39. 21
  40. 5

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