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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 439 · 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 add to 477 so that it divides exactly by 8?
  2. 2.Find the LCM of 6, 11 and 4.
  3. 3.The ratio of boys to girls in a class is 8 : 3. There are 32 boys. How many girls are there?
  4. 4.10.8 ÷ 4 =
  5. 5.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 10, 9 or 3.
  6. 6.Priya scored 1 marks out of 25 in a test. What percentage did Priya score?
  7. 7.If 7 kg of rice costs ₹210, how many kg can you buy for ₹300?
  8. 8.The ratio of boys to girls in a class is 4 : 9. There are 24 boys. How many girls are there?
  9. 9.Which is closest to 495 + 700 + 101? (a) 1200 (b) 1400 (c) 1300 (d) 1500
  10. 10.The HCF of two numbers is 2 and their LCM is 28. One of the numbers is 4. What is the other number?
  11. 11.A hall floor is 400 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  12. 12.Find the HCF of 24 and 56.
  13. 13.Round 83461 to the nearest thousand.
  14. 14.Two tanks hold 75 litres and 200 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  15. 15.What is 50% of 164?
  16. 16.3 painters can paint a school in 26 days. How many days would 2 painters take, working at the same speed?
  17. 17.7 × (16 − 3) + 4 ÷ 2 =
  18. 18.Round 2503 to the nearest hundred.
  19. 19.Which of these numbers divides exactly by 8? (a) 4475 (b) 3128 (c) 3139 (d) 1620
  20. 20.5/11 + 5/6 =
  21. 21.Find the HCF of 22 and 33.
  22. 22.Find the LCM of 8 and 36.
  23. 23.If 8 kg of rice costs ₹568, how many kg can you buy for ₹355?
  24. 24.What is 3/4 of ₹104?
  25. 25.20% of a number is 59. What is the number?
  26. 26.Two tanks hold 135 litres and 225 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  27. 27.Write 43/50 as a percent.
  28. 28.Which of these numbers divides exactly by 9? (a) 6795 (b) 2587 (c) 1418 (d) 1790
  29. 29.21 − 10 ÷ 2 × 2 =
  30. 30.Find the third proportional to 3 and 12 (that is, 3 : 12 = 12 : ?).
  31. 31.What percent of 50 is 46?
  32. 32.The ratio of boys to girls in a class is 7 : 4. There are 49 boys. How many girls are there?
  33. 33.What is 1/2 of ₹4?
  34. 34.Find the LCM of 5 and 9.
  35. 35.Which is closest to 304 × 19? (Round each number first.) (a) 60000 (b) 6000 (c) 600 (d) 12000
  36. 36.Two tanks hold 50 litres and 70 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  37. 37.Kavya takes 75 seconds and Pooja 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?
  38. 38.A car goes 165 km on 11 litres of petrol. How far can it go on 40 litres (in km)?
  39. 39.The HCF of two numbers is 5 and their LCM is 30. One of the numbers is 15. What is the other number?
  40. 40.What is the smallest number you must take away from 406 so that it divides exactly by 3?

Answer key

  1. 3
  2. 132
  3. 12
  4. 2.7
  5. 91
  6. 4
  7. 10
  8. 54
  9. 1300
  10. 14
  11. 24
  12. 8
  13. 83000
  14. 25
  15. 82
  16. 39
  17. 93
  18. 2500
  19. 3128
  20. 85/66
  21. 11
  22. 72
  23. 5
  24. 78
  25. 295
  26. 45
  27. 86
  28. 6795
  29. 11
  30. 48
  31. 92
  32. 28
  33. 2
  34. 45
  35. 6000
  36. 10
  37. 150
  38. 600
  39. 10
  40. 1

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