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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 833 · 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 96 and 36.
  2. 2.1/3 − 1/10 =
  3. 3.If 3 kg of rice costs ₹183, how many kg can you buy for ₹671?
  4. 4.10 painters can paint a school in 20 days. How many days would 4 painters take, working at the same speed?
  5. 5.3/12 + 6/8 =
  6. 6.A car goes 66 km on 3 litres of petrol. How far can it go on 15 litres (in km)?
  7. 7.If 6 kg of rice costs ₹306, how many kg can you buy for ₹255?
  8. 8.9 : 5 = 72 : ?
  9. 9.65 − 45 ÷ 9 × 7 =
  10. 10.Rahul takes 40 seconds and Farhan takes 75 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?
  11. 11.What percent of 50 is 47?
  12. 12.4/5 + 2/3 =
  13. 13.Round 37.31 to one decimal place. =
  14. 14.8.23 + 5.3 =
  15. 15.Which is closest to 96 + 605 + 896? (a) 1500 (b) 1700 (c) 1600 (d) 1800
  16. 16.What is the smallest number you must add to 178 so that it divides exactly by 9?
  17. 17.A hall floor is 250 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  18. 18.Find the smallest number bigger than 10 that leaves a remainder of 2 when divided by 8, 3 or 10.
  19. 19.If 6 cricket balls cost ₹30, how much do 8 cricket balls cost (in ₹)?
  20. 20.Three temple bells ring every 5, 24 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  21. 21.Find the HCF of 27 and 6.
  22. 22.If 5 erasers cost ₹300, how much do 17 erasers cost (in ₹)?
  23. 23.How many factors does 81 have?
  24. 24.Find the smallest number bigger than 9 that leaves a remainder of 1 when divided by 9, 6 or 8.
  25. 25.Find the LCM of 4, 3 and 10.
  26. 26.Two tanks hold 105 litres and 30 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  27. 27.If 12 pencil boxes cost ₹456, how much do 5 pencil boxes cost (in ₹)?
  28. 28.What is 1/2 of 16 kg?
  29. 29.Find the HCF of 52 and 91.
  30. 30.Round 55.31 to one decimal place. =
  31. 31.80% of a number is 452. What is the number?
  32. 32.A hall floor is 240 cm long and 210 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  33. 33.3/4 × 3/8 =
  34. 34.Find the HCF of 45 and 40.
  35. 35.4/6 × 1/2 =
  36. 36.Which is closest to 298 × 59? (Round each number first.) (a) 180000 (b) 36000 (c) 18000 (d) 1800
  37. 37.The HCF of two numbers is 9 and their LCM is 54. One of the numbers is 18. What is the other number?
  38. 38.The HCF of two numbers is 4 and their LCM is 72. One of the numbers is 8. What is the other number?
  39. 39.Find the HCF of 80 and 30.
  40. 40.Kabir scored 46 marks out of 50 in a test. What percentage did Kabir score?

Answer key

  1. 12
  2. 7/30
  3. 11
  4. 50
  5. 1
  6. 330
  7. 5
  8. 40
  9. 30
  10. 600
  11. 94
  12. 22/15
  13. 37.3
  14. 13.53
  15. 1600
  16. 2
  17. 15
  18. 122
  19. 40
  20. 120
  21. 3
  22. 1020
  23. 5
  24. 73
  25. 60
  26. 15
  27. 190
  28. 8
  29. 13
  30. 55.3
  31. 565
  32. 56
  33. 9/32
  34. 5
  35. 1/3
  36. 18000
  37. 27
  38. 36
  39. 10
  40. 92

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