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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 13 · 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 take away from 870 so that it divides exactly by 4?
  2. 2.If 5 bottles of juice cost ₹125, how much do 14 bottles of juice cost (in ₹)?
  3. 3.35 + 9 × 8 − 2 =
  4. 4.If 3 kg of rice costs ₹189, how many kg can you buy for ₹693?
  5. 5.The ratio of boys to girls in a class is 2 : 1. There are 14 boys. How many girls are there?
  6. 6.If 9 kg of rice costs ₹504, how many kg can you buy for ₹448?
  7. 7.Divide ₹220 between Sneha and Ananya in the ratio 3 : 2. How much does Sneha get (in ₹)?
  8. 8.Which is closest to 2391 ÷ 31? (a) 40 (b) 800 (c) 80 (d) 160
  9. 9.Write 3/10 as a percent.
  10. 10.A car goes 48 km on 3 litres of petrol. How far can it go on 10 litres (in km)?
  11. 11.Find the third proportional to 9 and 27 (that is, 9 : 27 = 27 : ?).
  12. 12.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 5, 12 or 8.
  13. 13.Find the third proportional to 9 and 36 (that is, 9 : 36 = 36 : ?).
  14. 14.Round 32119 to the nearest ten.
  15. 15.Round 28797 to the nearest ten.
  16. 16.Write 4/5 as a percent.
  17. 17.Divide ₹470 between Meera and Sneha in the ratio 3 : 7. How much does Sneha get (in ₹)?
  18. 18.35 − 18 ÷ 3 × 5 =
  19. 19.Zoya takes 75 seconds and Saanvi takes 50 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?
  20. 20.24 ÷ 6 × 7 + 29 =
  21. 21.3 painters can paint a school in 20 days. How many days would 4 painters take, working at the same speed?
  22. 22.1/3 + 1/4 =
  23. 23.What is 20% of 580?
  24. 24.Find the LCM of 8, 5 and 12.
  25. 25.If 12 erasers cost ₹612, how much do 20 erasers cost (in ₹)?
  26. 26.The HCF of two numbers is 4 and their LCM is 24. One of the numbers is 12. What is the other number?
  27. 27.The ratio of boys to girls in a class is 9 : 4. There are 36 boys. How many girls are there?
  28. 28.Divide ₹81 between Rohan and Kabir in the ratio 1 : 2. How much does Rohan get (in ₹)?
  29. 29.Find the LCM of 8 and 9.
  30. 30.3/4 of 36 + 7 × 4 =
  31. 31.Tara scored 20 marks out of 40 in a test. What percentage did Tara score?
  32. 32.Which is closest to 793 ÷ 21? (a) 20 (b) 40 (c) 80 (d) 400
  33. 33.What is the smallest number you must take away from 457 so that it divides exactly by 9?
  34. 34.Find the LCM of 32 and 12.
  35. 35.Which is closest to 1801 ÷ 19? (a) 900 (b) 45 (c) 90 (d) 180
  36. 36.What percent of 200 is 56?
  37. 37.Find the HCF of 30 and 25.
  38. 38.6.2 ÷ 2 =
  39. 39.1/5 + 1/4 =
  40. 40.If 3 kg of rice costs ₹132, how many kg can you buy for ₹660?

Answer key

  1. 2
  2. 350
  3. 105
  4. 11
  5. 7
  6. 8
  7. 132
  8. 80
  9. 30
  10. 160
  11. 81
  12. 121
  13. 144
  14. 32120
  15. 28800
  16. 80
  17. 329
  18. 5
  19. 150
  20. 57
  21. 15
  22. 7/12
  23. 116
  24. 120
  25. 1020
  26. 8
  27. 16
  28. 27
  29. 72
  30. 55
  31. 50
  32. 40
  33. 7
  34. 96
  35. 90
  36. 28
  37. 5
  38. 3.1
  39. 9/20
  40. 15

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