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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 438 · 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. 1.70 − 45 ÷ 5 × 4 =
  2. 2.Find the HCF of 12 and 32.
  3. 3.Write 3/4 as a percent.
  4. 4.Which is closest to 200 + 395 + 298? (a) 900 (b) 800 (c) 1000 (d) 1100
  5. 5.Kavya scored 24 marks out of 40 in a test. What percentage did Kavya score?
  6. 6.Which is closest to 496 × 59? (Round each number first.) (a) 300000 (b) 30000 (c) 3000 (d) 60000
  7. 7.Round 5461 to the nearest ten.
  8. 8.Two tanks hold 210 litres and 120 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  9. 9.Write 37/50 as a percent.
  10. 10.Kavya scored 6 marks out of 25 in a test. What percentage did Kavya score?
  11. 11.The HCF of two numbers is 6 and their LCM is 210. One of the numbers is 42. What is the other number?
  12. 12.The ratio of boys to girls in a class is 1 : 7. There are 3 boys. How many girls are there?
  13. 13.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?
  14. 14.A hall floor is 250 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  15. 15.5/9 + 2/6 =
  16. 16.Which is closest to 499 × 80? (Round each number first.) (a) 400000 (b) 4000 (c) 80000 (d) 40000
  17. 17.10% of a number is 11. What is the number?
  18. 18.Three temple bells ring every 6, 20 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  19. 19.Which of these numbers divides exactly by 3? (a) 1207 (b) 3416 (c) 9867 (d) 8287
  20. 20.10 : 3 = 30 : ?
  21. 21.What is the smallest number you must add to 956 so that it divides exactly by 7?
  22. 22.Divide ₹102 between Sneha and Aarav in the ratio 1 : 5. How much does Sneha get (in ₹)?
  23. 23.60% of a number is 249. What is the number?
  24. 24.3/9 − 2/7 =
  25. 25.Three temple bells ring every 18, 5 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  26. 26.Find the LCM of 4, 8 and 15.
  27. 27.5 × (25 − 17) + 36 ÷ 3 =
  28. 28.Round 93642 to the nearest hundred.
  29. 29.What is 150% of 40?
  30. 30.Round 21.18 to one decimal place. =
  31. 31.What is the smallest number you must add to 466 so that it divides exactly by 11?
  32. 32.Find the third proportional to 9 and 36 (that is, 9 : 36 = 36 : ?).
  33. 33.Aditya takes 50 seconds and Saanvi takes 60 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?
  34. 34.Three temple bells ring every 5, 30 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  35. 35.Which is closest to 2001 ÷ 49? (a) 80 (b) 400 (c) 20 (d) 40
  36. 36.5% of a number is 16. What is the number?
  37. 37.Find the smallest number bigger than 15 that leaves a remainder of 3 when divided by 15, 10 or 12.
  38. 38.The ratio of boys to girls in a class is 1 : 8. There are 3 boys. How many girls are there?
  39. 39.A hostel has enough food for 11 students for 14 days. How many days will the same food last for 14 students?
  40. 40.40 − 21 ÷ 3 × 3 =

Answer key

  1. 34
  2. 4
  3. 75
  4. 900
  5. 60
  6. 30000
  7. 5460
  8. 30
  9. 74
  10. 24
  11. 30
  12. 21
  13. 15
  14. 10
  15. 8/9
  16. 40000
  17. 110
  18. 60
  19. 9867
  20. 9
  21. 3
  22. 17
  23. 415
  24. 1/21
  25. 90
  26. 120
  27. 52
  28. 93600
  29. 60
  30. 21.2
  31. 7
  32. 144
  33. 300
  34. 60
  35. 40
  36. 320
  37. 63
  38. 24
  39. 11
  40. 19

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