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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 918 · 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. 1.11 painters can paint a school in 23 days. How many days would 23 painters take, working at the same speed?
  2. 2.If 10 notebooks cost ₹350, how much do 9 notebooks cost (in ₹)?
  3. 3.9/10 − 6/8 =
  4. 4.What is the smallest number you must take away from 233 so that it divides exactly by 7?
  5. 5.The ratio of boys to girls in a class is 4 : 1. There are 40 boys. How many girls are there?
  6. 6.Round 28307 to the nearest ten.
  7. 7.7/9 × 3/5 =
  8. 8.If 5 kites cost ₹30, how much do 19 kites cost (in ₹)?
  9. 9.Which is closest to 199 + 805 + 703? (a) 1600 (b) 1700 (c) 1800 (d) 1900
  10. 10.5/7 of 84 + 3 × 9 =
  11. 11.Find the smallest number bigger than 9 that leaves a remainder of 2 when divided by 9, 5 or 6.
  12. 12.1/3 + 10/12 =
  13. 13.3 × (11 − 1) + 18 ÷ 9 =
  14. 14.Three temple bells ring every 8, 20 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  15. 15.Find the HCF of 30 and 35.
  16. 16.Divide ₹288 between Diya and Rohan in the ratio 4 : 5. How much does Rohan get (in ₹)?
  17. 17.Two tanks hold 40 litres and 15 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  18. 18.If 5 erasers cost ₹15, how much do 17 erasers cost (in ₹)?
  19. 19.The ratio of boys to girls in a class is 3 : 5. There are 12 boys. How many girls are there?
  20. 20.What is 12% of 75?
  21. 21.What is the smallest number you must add to 791 so that it divides exactly by 12?
  22. 22.1/9 × 4/11 =
  23. 23.How many factors does 96 have?
  24. 24.If 6 kg of rice costs ₹504, how many kg can you buy for ₹168?
  25. 25.What percent of 80 is 52?
  26. 26.Divide ₹126 between Priya and Meera in the ratio 6 : 1. How much does Priya get (in ₹)?
  27. 27.The HCF of two numbers is 8 and their LCM is 112. One of the numbers is 56. What is the other number?
  28. 28.7.81 + 6.4 =
  29. 29.Which of these numbers divides exactly by 8? (a) 8126 (b) 9694 (c) 2104 (d) 6287
  30. 30.Divide ₹420 between Aditya and Vivaan in the ratio 5 : 9. How much does Aditya get (in ₹)?
  31. 31.12 ÷ 6 × 7 + 12 =
  32. 32.Three temple bells ring every 8, 15 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  33. 33.5 : 15 = 35 : ?
  34. 34.Find the HCF of 45 and 120.
  35. 35.Three temple bells ring every 4, 6 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  36. 36.Two tanks hold 180 litres and 225 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  37. 37.Nisha scored 36 marks out of 40 in a test. What percentage did Nisha score?
  38. 38.36 + 5 × 4 − 18 =
  39. 39.What is 1/3 of 27 km?
  40. 40.8.4 × 2 =

Answer key

  1. 11
  2. 315
  3. 3/20
  4. 2
  5. 10
  6. 28310
  7. 7/15
  8. 114
  9. 1700
  10. 87
  11. 92
  12. 7/6
  13. 32
  14. 40
  15. 5
  16. 160
  17. 5
  18. 51
  19. 20
  20. 9
  21. 1
  22. 4/99
  23. 12
  24. 2
  25. 65
  26. 108
  27. 16
  28. 14.21
  29. 2104
  30. 150
  31. 26
  32. 120
  33. 105
  34. 15
  35. 60
  36. 45
  37. 90
  38. 38
  39. 9
  40. 16.8

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