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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 328 · 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 smallest number bigger than 6 that leaves a remainder of 1 when divided by 4, 6 or 5.
  2. 2.10 painters can paint a school in 23 days. How many days would 5 painters take, working at the same speed?
  3. 3.A hostel has enough food for 7 students for 30 days. How many days will the same food last for 15 students?
  4. 4.5/6 × 2/3 =
  5. 5.Three temple bells ring every 4, 10 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  6. 6.Find the LCM of 12 and 30.
  7. 7.A car goes 40 km on 4 litres of petrol. How far can it go on 6 litres (in km)?
  8. 8.Round 89099 to the nearest ten.
  9. 9.Find the LCM of 2, 12 and 8.
  10. 10.5/11 × 1/10 =
  11. 11.Find the LCM of 14 and 16.
  12. 12.What is 12% of 575?
  13. 13.(8 + 15) × 9 − 24 =
  14. 14.Find the LCM of 10, 3 and 5.
  15. 15.The ratio of boys to girls in a class is 7 : 8. There are 21 boys. How many girls are there?
  16. 16.The ratio of boys to girls in a class is 5 : 3. There are 15 boys. How many girls are there?
  17. 17.If 9 kg of rice costs ₹684, how many kg can you buy for ₹760?
  18. 18.3/4 − 2/7 =
  19. 19.Find the HCF of 30 and 50.
  20. 20.(11 + 3) × 4 − 11 =
  21. 21.Find the LCM of 4, 2 and 10.
  22. 22.Find the LCM of 4, 2 and 15.
  23. 23.The HCF of two numbers is 2 and their LCM is 24. One of the numbers is 6. What is the other number?
  24. 24.The ratio of boys to girls in a class is 3 : 1. There are 9 boys. How many girls are there?
  25. 25.A car goes 38 km on 2 litres of petrol. How far can it go on 35 litres (in km)?
  26. 26.The HCF of two numbers is 3 and their LCM is 30. One of the numbers is 6. What is the other number?
  27. 27.3.08 + 5.5 =
  28. 28.What is the smallest number you must add to 229 so that it divides exactly by 4?
  29. 29.What is the smallest number you must add to 847 so that it divides exactly by 13?
  30. 30.Which of these numbers divides exactly by 8? (a) 9024 (b) 5436 (c) 6507 (d) 4954
  31. 31.The HCF of two numbers is 3 and their LCM is 72. One of the numbers is 9. What is the other number?
  32. 32.Two tanks hold 175 litres and 50 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  33. 33.What is the smallest number you must take away from 855 so that it divides exactly by 13?
  34. 34.5 × (22 − 13) + 96 ÷ 8 =
  35. 35.Three temple bells ring every 6, 9 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  36. 36.The ratio of boys to girls in a class is 5 : 7. There are 35 boys. How many girls are there?
  37. 37.If 8 kg of rice costs ₹280, how many kg can you buy for ₹245?
  38. 38.Round 91905 to the nearest thousand.
  39. 39.49 ÷ 7 × 4 + 26 =
  40. 40.Which is closest to 701 + 902 + 298? (a) 1800 (b) 2000 (c) 2100 (d) 1900

Answer key

  1. 61
  2. 46
  3. 14
  4. 5/9
  5. 60
  6. 60
  7. 60
  8. 89100
  9. 24
  10. 1/22
  11. 112
  12. 69
  13. 183
  14. 30
  15. 24
  16. 9
  17. 10
  18. 13/28
  19. 10
  20. 45
  21. 20
  22. 60
  23. 8
  24. 3
  25. 665
  26. 15
  27. 8.58
  28. 3
  29. 11
  30. 9024
  31. 24
  32. 25
  33. 10
  34. 57
  35. 90
  36. 49
  37. 7
  38. 92000
  39. 54
  40. 1900

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