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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 494 · 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 HCF of 45 and 10.
  2. 2.Round 49.41 to one decimal place. =
  3. 3.2 painters can paint a school in 11 days. How many days would 11 painters take, working at the same speed?
  4. 4.Three temple bells ring every 18, 10 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  5. 5.A hall floor is 90 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  6. 6.Which is closest to 395 + 904 + 299? (a) 1800 (b) 1500 (c) 1600 (d) 1700
  7. 7.Find the HCF of 21 and 9.
  8. 8.3/6 × 8/10 =
  9. 9.(14 + 6) × 5 − 13 =
  10. 10.Three temple bells ring every 5, 4 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  11. 11.Which is closest to 601 × 51? (Round each number first.) (a) 60000 (b) 3000 (c) 30000 (d) 300000
  12. 12.A car goes 105 km on 7 litres of petrol. How far can it go on 5 litres (in km)?
  13. 13.The ratio of boys to girls in a class is 7 : 8. There are 56 boys. How many girls are there?
  14. 14.What is 3/5 of ₹60?
  15. 15.3.8 × 6 =
  16. 16.What is the smallest number you must take away from 126 so that it divides exactly by 4?
  17. 17.Rahul takes 36 seconds and Tara takes 80 seconds to run once round a track. They start together from the start line. After how many seconds will they first be at the start line together again?
  18. 18.6/11 × 1/7 =
  19. 19.What is the smallest number you must add to 314 so that it divides exactly by 7?
  20. 20.3/8 of 56 + 7 × 3 =
  21. 21.How many factors does 43 have?
  22. 22.Three temple bells ring every 12, 30 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  23. 23.A car goes 34 km on 2 litres of petrol. How far can it go on 11 litres (in km)?
  24. 24.Find the smallest number bigger than 8 that leaves a remainder of 2 when divided by 3, 6 or 8.
  25. 25.8.84 + 8.3 =
  26. 26.How many factors does 75 have?
  27. 27.7.4 ÷ 2 =
  28. 28.What is 80% of 575?
  29. 29.15% of a number is 6. What is the number?
  30. 30.What percent of 250 is 15?
  31. 31.Find the LCM of 4, 14 and 2.
  32. 32.A hall floor is 320 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  33. 33.Divide ₹510 between Kavya and Sneha in the ratio 7 : 8. How much does Sneha get (in ₹)?
  34. 34.16 ÷ 4 × 9 + 30 =
  35. 35.Find the smallest number bigger than 8 that leaves a remainder of 2 when divided by 5, 6 or 8.
  36. 36.If 9 kites cost ₹315, how much do 7 kites cost (in ₹)?
  37. 37.What is the smallest number you must add to 711 so that it divides exactly by 13?
  38. 38.33 ÷ 3 × 7 + 18 =
  39. 39.9 painters can paint a school in 13 days. How many days would 3 painters take, working at the same speed?
  40. 40.If 9 kg of rice costs ₹360, how many kg can you buy for ₹120?

Answer key

  1. 5
  2. 49.4
  3. 2
  4. 90
  5. 6
  6. 1600
  7. 3
  8. 2/5
  9. 87
  10. 60
  11. 30000
  12. 75
  13. 64
  14. 36
  15. 22.8
  16. 2
  17. 720
  18. 6/77
  19. 1
  20. 42
  21. 2
  22. 60
  23. 187
  24. 26
  25. 17.14
  26. 6
  27. 3.7
  28. 460
  29. 40
  30. 6
  31. 28
  32. 24
  33. 272
  34. 66
  35. 122
  36. 245
  37. 4
  38. 95
  39. 39
  40. 3

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