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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 982 · 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.The HCF of two numbers is 5 and their LCM is 140. One of the numbers is 20. What is the other number?
  2. 2.Find the third proportional to 3 and 6 (that is, 3 : 6 = 6 : ?).
  3. 3.Find the LCM of 12 and 10.
  4. 4.If 3 kg of rice costs ₹153, how many kg can you buy for ₹459?
  5. 5.Arjun takes 40 seconds and Aarav takes 48 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?
  6. 6.Round 81.81 to one decimal place. =
  7. 7.A car goes 209 km on 11 litres of petrol. How far can it go on 28 litres (in km)?
  8. 8.Find the LCM of 12, 6 and 2.
  9. 9.What percent of 80 is 72?
  10. 10.If 4 kg of rice costs ₹148, how many kg can you buy for ₹185?
  11. 11.Which is closest to 809 ÷ 19? (a) 20 (b) 400 (c) 80 (d) 40
  12. 12.What percent of 25 is 8?
  13. 13.Three temple bells ring every 15, 9 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  14. 14.66 ÷ 6 × 4 + 12 =
  15. 15.Which is closest to 891 ÷ 29? (a) 30 (b) 60 (c) 300 (d) 15
  16. 16.Find the third proportional to 3 and 9 (that is, 3 : 9 = 9 : ?).
  17. 17.Find the LCM of 3, 2 and 15.
  18. 18.Find the LCM of 4, 3 and 14.
  19. 19.Find the LCM of 25 and 40.
  20. 20.A car goes 52 km on 4 litres of petrol. How far can it go on 30 litres (in km)?
  21. 21.Find the third proportional to 8 and 32 (that is, 8 : 32 = 32 : ?).
  22. 22.Two tanks hold 200 litres and 80 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  23. 23.4/5 of 55 + 7 × 2 =
  24. 24.Divide ₹66 between Meera and Rohan in the ratio 2 : 1. How much does Meera get (in ₹)?
  25. 25.23 + 9 × 2 − 10 =
  26. 26.10/12 × 1/5 =
  27. 27.Write 29/50 as a percent.
  28. 28.Which is closest to 898 + 597 + 801? (a) 2200 (b) 2300 (c) 2500 (d) 2400
  29. 29.Rohan takes 60 seconds and Kabir takes 40 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?
  30. 30.7.5 × 6 =
  31. 31.Which is closest to 801 × 42? (Round each number first.) (a) 320000 (b) 3200 (c) 64000 (d) 32000
  32. 32.A car goes 110 km on 10 litres of petrol. How far can it go on 32 litres (in km)?
  33. 33.What is the smallest number you must take away from 451 so that it divides exactly by 9?
  34. 34.If 4 pencil boxes cost ₹148, how much do 5 pencil boxes cost (in ₹)?
  35. 35.How many factors does 50 have?
  36. 36.What is 10% of 310?
  37. 37.Find the third proportional to 7 and 35 (that is, 7 : 35 = 35 : ?).
  38. 38.The ratio of boys to girls in a class is 5 : 4. There are 45 boys. How many girls are there?
  39. 39.Find the LCM of 2 and 5.
  40. 40.What is 30% of 470?

Answer key

  1. 35
  2. 12
  3. 60
  4. 9
  5. 240
  6. 81.8
  7. 532
  8. 12
  9. 90
  10. 5
  11. 40
  12. 32
  13. 90
  14. 56
  15. 30
  16. 27
  17. 30
  18. 84
  19. 200
  20. 390
  21. 128
  22. 40
  23. 58
  24. 44
  25. 31
  26. 1/6
  27. 58
  28. 2300
  29. 120
  30. 45
  31. 32000
  32. 352
  33. 1
  34. 185
  35. 6
  36. 31
  37. 175
  38. 36
  39. 10
  40. 141

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