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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 766 · 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 LCM of 7 and 5.
  2. 2.32 + 7 × 8 − 17 =
  3. 3.15% of a number is 3. What is the number?
  4. 4.Find the LCM of 2, 5 and 10.
  5. 5.9 painters can paint a school in 10 days. How many days would 2 painters take, working at the same speed?
  6. 6.If 3 mangoes cost ₹33, how much do 16 mangoes cost (in ₹)?
  7. 7.Two tanks hold 135 litres and 90 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  8. 8.Which is closest to 897 × 58? (Round each number first.) (a) 5400 (b) 540000 (c) 54000 (d) 108000
  9. 9.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 15, 9 or 5.
  10. 10.Round 12.31 to one decimal place. =
  11. 11.40% of a number is 114. What is the number?
  12. 12.2/7 × 3/12 =
  13. 13.How many factors does 81 have?
  14. 14.75 − 24 ÷ 4 × 6 =
  15. 15.Nisha scored 6 marks out of 50 in a test. What percentage did Nisha score?
  16. 16.What is 50% of 524?
  17. 17.24 ÷ 4 × 5 + 22 =
  18. 18.Find the HCF of 70 and 60.
  19. 19.30% of a number is 54. What is the number?
  20. 20.Round 58254 to the nearest ten.
  21. 21.If 4 bottles of juice cost ₹228, how much do 11 bottles of juice cost (in ₹)?
  22. 22.What is the smallest number you must add to 480 so that it divides exactly by 13?
  23. 23.What is the smallest number you must add to 479 so that it divides exactly by 6?
  24. 24.Round 75110 to the nearest thousand.
  25. 25.80% of a number is 412. What is the number?
  26. 26.What is the smallest number you must add to 532 so that it divides exactly by 9?
  27. 27.Divide ₹80 between Aditya and Dev in the ratio 1 : 3. How much does Aditya get (in ₹)?
  28. 28.If 4 notebooks cost ₹52, how much do 9 notebooks cost (in ₹)?
  29. 29.1/5 of 10 + 5 × 3 =
  30. 30.What is 10% of 510?
  31. 31.Which is closest to 602 × 60? (Round each number first.) (a) 360000 (b) 72000 (c) 36000 (d) 3600
  32. 32.Round 11114 to the nearest hundred.
  33. 33.Find the third proportional to 9 and 45 (that is, 9 : 45 = 45 : ?).
  34. 34.The ratio of boys to girls in a class is 8 : 7. There are 40 boys. How many girls are there?
  35. 35.If 5 kg of rice costs ₹110, how many kg can you buy for ₹154?
  36. 36.Three temple bells ring every 24, 5 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  37. 37.The HCF of two numbers is 8 and their LCM is 288. One of the numbers is 32. What is the other number?
  38. 38.What is the smallest number you must add to 249 so that it divides exactly by 6?
  39. 39.11/12 × 3/5 =
  40. 40.20% of a number is 7. What is the number?

Answer key

  1. 35
  2. 71
  3. 20
  4. 10
  5. 45
  6. 176
  7. 45
  8. 54000
  9. 46
  10. 12.3
  11. 285
  12. 1/14
  13. 5
  14. 39
  15. 12
  16. 262
  17. 52
  18. 10
  19. 180
  20. 58250
  21. 627
  22. 1
  23. 1
  24. 75000
  25. 515
  26. 8
  27. 20
  28. 117
  29. 17
  30. 51
  31. 36000
  32. 11100
  33. 225
  34. 35
  35. 7
  36. 120
  37. 72
  38. 3
  39. 11/20
  40. 35

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