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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 344 · 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.Three temple bells ring every 4, 18 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  2. 2.Find the LCM of 4, 12 and 8.
  3. 3.Which is closest to 196 × 38? (Round each number first.) (a) 80000 (b) 16000 (c) 8000 (d) 800
  4. 4.How many factors does 52 have?
  5. 5.What is 5% of 180?
  6. 6.The HCF of two numbers is 2 and their LCM is 84. One of the numbers is 14. What is the other number?
  7. 7.Two tanks hold 105 litres and 45 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  8. 8.Find the LCM of 30 and 24.
  9. 9.1/6 of 60 + 8 × 4 =
  10. 10.2/3 + 1/6 =
  11. 11.Round 90235 to the nearest thousand.
  12. 12.Find the LCM of 6, 3 and 7.
  13. 13.Which is closest to 796 × 52? (Round each number first.) (a) 80000 (b) 40000 (c) 400000 (d) 4000
  14. 14.3/6 − 1/12 =
  15. 15.5% of a number is 11. What is the number?
  16. 16.30% of a number is 117. What is the number?
  17. 17.2/4 × 3/5 =
  18. 18.What percent of 200 is 98?
  19. 19.22 + 8 × 7 − 8 =
  20. 20.What is the smallest number you must take away from 232 so that it divides exactly by 9?
  21. 21.The ratio of boys to girls in a class is 8 : 1. There are 72 boys. How many girls are there?
  22. 22.How many factors does 61 have?
  23. 23.Find the LCM of 14, 9 and 3.
  24. 24.How many factors does 29 have?
  25. 25.Two tanks hold 135 litres and 30 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  26. 26.The HCF of two numbers is 4 and their LCM is 120. One of the numbers is 20. What is the other number?
  27. 27.Which is closest to 298 × 88? (Round each number first.) (a) 27000 (b) 270000 (c) 2700 (d) 54000
  28. 28.Find the LCM of 20 and 45.
  29. 29.Which is closest to 298 + 202 + 698? (a) 1200 (b) 1100 (c) 1300 (d) 1400
  30. 30.A hall floor is 280 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  31. 31.2/9 + 6/11 =
  32. 32.4 painters can paint a school in 30 days. How many days would 10 painters take, working at the same speed?
  33. 33.8.96 + 3.5 =
  34. 34.Find the HCF of 36 and 96.
  35. 35.What is the smallest number you must take away from 376 so that it divides exactly by 7?
  36. 36.A car goes 99 km on 11 litres of petrol. How far can it go on 24 litres (in km)?
  37. 37.Divide ₹342 between Aditya and Sneha in the ratio 1 : 8. How much does Sneha get (in ₹)?
  38. 38.What is the smallest number you must add to 734 so that it divides exactly by 13?
  39. 39.If 9 kg of rice costs ₹747, how many kg can you buy for ₹166?
  40. 40.If 7 kg of rice costs ₹630, how many kg can you buy for ₹1080?

Answer key

  1. 36
  2. 24
  3. 8000
  4. 6
  5. 9
  6. 12
  7. 15
  8. 120
  9. 42
  10. 5/6
  11. 90000
  12. 42
  13. 40000
  14. 5/12
  15. 220
  16. 390
  17. 3/10
  18. 49
  19. 70
  20. 7
  21. 9
  22. 2
  23. 126
  24. 2
  25. 15
  26. 24
  27. 27000
  28. 180
  29. 1200
  30. 21
  31. 76/99
  32. 12
  33. 12.46
  34. 12
  35. 5
  36. 216
  37. 304
  38. 7
  39. 2
  40. 12

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