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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 987 · 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 570 so that it divides exactly by 9?
  2. 2.The HCF of two numbers is 8 and their LCM is 120. One of the numbers is 24. What is the other number?
  3. 3.If 3 kites cost ₹57, how much do 10 kites cost (in ₹)?
  4. 4.How many factors does 70 have?
  5. 5.32 + 5 × 10 − 31 =
  6. 6.Three temple bells ring every 6, 24 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  7. 7.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?
  8. 8.48.8 ÷ 8 =
  9. 9.8.4 ÷ 2 =
  10. 10.12 : 13 = 84 : ?
  11. 11.10/11 + 1/6 =
  12. 12.Round 54.82 to one decimal place. =
  13. 13.A hall floor is 140 cm long and 40 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  14. 14.What is 25% of 92?
  15. 15.66 − 8 ÷ 2 × 9 =
  16. 16.Two tanks hold 405 litres and 180 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  17. 17.Divide ₹767 between Aditya and Saanvi in the ratio 4 : 9. How much does Aditya get (in ₹)?
  18. 18.Find the HCF of 20 and 50.
  19. 19.The ratio of boys to girls in a class is 5 : 7. There are 10 boys. How many girls are there?
  20. 20.Find the LCM of 25 and 40.
  21. 21.40% of a number is 198. What is the number?
  22. 22.3.1 × 9 =
  23. 23.1/7 of 21 + 3 × 6 =
  24. 24.Find the LCM of 10 and 4.
  25. 25.Divide ₹385 between Manav and Priya in the ratio 1 : 6. How much does Manav get (in ₹)?
  26. 26.A hall floor is 210 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  27. 27.If 4 pens cost ₹44, how much do 20 pens cost (in ₹)?
  28. 28.How many factors does 22 have?
  29. 29.If 4 kg of rice costs ₹96, how many kg can you buy for ₹312?
  30. 30.Which is closest to 796 × 70? (Round each number first.) (a) 5600 (b) 112000 (c) 560000 (d) 56000
  31. 31.Divide ₹78 between Nisha and Pooja in the ratio 1 : 5. How much does Nisha get (in ₹)?
  32. 32.45 + 3 × 2 − 3 =
  33. 33.15% of a number is 21. What is the number?
  34. 34.Three temple bells ring every 6, 10 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  35. 35.What percent of 500 is 145?
  36. 36.A hall floor is 400 cm long and 350 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  37. 37.Three temple bells ring every 6, 12 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  38. 38.(17 + 2) × 6 − 3 =
  39. 39.Divide ₹306 between Kavya and Kabir in the ratio 8 : 9. How much does Kabir get (in ₹)?
  40. 40.The ratio of boys to girls in a class is 6 : 5. There are 24 boys. How many girls are there?

Answer key

  1. 6
  2. 40
  3. 190
  4. 8
  5. 51
  6. 120
  7. 15
  8. 6.1
  9. 4.2
  10. 91
  11. 71/66
  12. 54.8
  13. 14
  14. 23
  15. 30
  16. 45
  17. 236
  18. 10
  19. 14
  20. 200
  21. 495
  22. 27.9
  23. 21
  24. 20
  25. 55
  26. 28
  27. 220
  28. 4
  29. 13
  30. 56000
  31. 13
  32. 48
  33. 140
  34. 120
  35. 29
  36. 56
  37. 36
  38. 111
  39. 162
  40. 20

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