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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 580 · 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. 1.8.04 + 6.8 =
  2. 2.1/2 − 1/9 =
  3. 3.72.9 ÷ 9 =
  4. 4.12.4 ÷ 4 =
  5. 5.The ratio of boys to girls in a class is 1 : 8. There are 8 boys. How many girls are there?
  6. 6.A hostel has enough food for 4 students for 7 days. How many days will the same food last for 2 students?
  7. 7.Which is closest to 302 + 304 + 203? (a) 1000 (b) 700 (c) 800 (d) 900
  8. 8.Find the smallest number bigger than 8 that leaves a remainder of 4 when divided by 6, 5 or 8.
  9. 9.Find the LCM of 54 and 30.
  10. 10.Diya takes 80 seconds and Dev 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?
  11. 11.Find the LCM of 21 and 12.
  12. 12.Round 47.06 to one decimal place. =
  13. 13.1/8 of 24 + 9 × 4 =
  14. 14.Find the smallest number bigger than 9 that leaves a remainder of 2 when divided by 4, 5 or 9.
  15. 15.Which is closest to 599 × 41? (Round each number first.) (a) 2400 (b) 24000 (c) 48000 (d) 240000
  16. 16.Find the LCM of 36 and 28.
  17. 17.34 + 6 × 11 − 11 =
  18. 18.75% of a number is 105. What is the number?
  19. 19.What is 1/4 of ₹20?
  20. 20.Which is closest to 2695 ÷ 29? (a) 180 (b) 45 (c) 90 (d) 900
  21. 21.Three temple bells ring every 24, 6 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  22. 22.Which is closest to 98 + 803 + 804? (a) 1600 (b) 1900 (c) 1800 (d) 1700
  23. 23.Divide ₹90 between Aarav and Diya in the ratio 2 : 1. How much does Aarav get (in ₹)?
  24. 24.What is 1/2 of 54 kg?
  25. 25.Round 54.07 to one decimal place. =
  26. 26.What is 1/2 of 6 km?
  27. 27.The ratio of boys to girls in a class is 1 : 6. There are 8 boys. How many girls are there?
  28. 28.Find the HCF of 10 and 25.
  29. 29.Farhan scored 40 marks out of 80 in a test. What percentage did Farhan score?
  30. 30.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 4, 15 or 10.
  31. 31.10 : 3 = 20 : ?
  32. 32.Two tanks hold 120 litres and 135 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  33. 33.The HCF of two numbers is 4 and their LCM is 160. One of the numbers is 20. What is the other number?
  34. 34.84 ÷ 7 × 8 + 9 =
  35. 35.8 × (17 − 10) + 4 ÷ 2 =
  36. 36.Find the third proportional to 5 and 15 (that is, 5 : 15 = 15 : ?).
  37. 37.A hostel has enough food for 3 students for 19 days. How many days will the same food last for 19 students?
  38. 38.36 − 14 ÷ 7 × 4 =
  39. 39.What percent of 20 is 5?
  40. 40.5 ÷ 2 =

Answer key

  1. 14.84
  2. 7/18
  3. 8.1
  4. 3.1
  5. 64
  6. 14
  7. 800
  8. 124
  9. 270
  10. 240
  11. 84
  12. 47.1
  13. 39
  14. 182
  15. 24000
  16. 252
  17. 89
  18. 140
  19. 5
  20. 90
  21. 120
  22. 1700
  23. 60
  24. 27
  25. 54.1
  26. 3
  27. 48
  28. 5
  29. 50
  30. 62
  31. 6
  32. 15
  33. 32
  34. 105
  35. 58
  36. 45
  37. 3
  38. 28
  39. 25
  40. 2.5

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