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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 409 · 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.If 10 kites cost ₹90, how much do 19 kites cost (in ₹)?
  2. 2.11 : 8 = 33 : ?
  3. 3.11 : 10 = 33 : ?
  4. 4.Find the smallest number bigger than 12 that leaves a remainder of 4 when divided by 12, 6 or 9.
  5. 5.Write 1/4 as a percent.
  6. 6.Find the LCM of 5, 8 and 12.
  7. 7.36 − 20 ÷ 5 × 5 =
  8. 8.A hostel has enough food for 2 students for 8 days. How many days will the same food last for 8 students?
  9. 9.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 8, 12 or 5.
  10. 10.Three temple bells ring every 6, 30 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  11. 11.What is the smallest number you must take away from 632 so that it divides exactly by 11?
  12. 12.Which is closest to 899 × 79? (Round each number first.) (a) 720000 (b) 7200 (c) 144000 (d) 72000
  13. 13.Find the HCF of 108 and 24.
  14. 14.Round 39.44 to one decimal place. =
  15. 15.Round 19.67 to one decimal place. =
  16. 16.If 3 kg of rice costs ₹156, how many kg can you buy for ₹416?
  17. 17.Divide ₹216 between Saanvi and Aarav in the ratio 5 : 7. How much does Saanvi get (in ₹)?
  18. 18.If 11 bottles of juice cost ₹176, how much do 18 bottles of juice cost (in ₹)?
  19. 19.1/2 − 4/12 =
  20. 20.What percent of 25 is 18?
  21. 21.Write 3/5 as a percent.
  22. 22.The HCF of two numbers is 3 and their LCM is 42. One of the numbers is 6. What is the other number?
  23. 23.What is the smallest number you must add to 869 so that it divides exactly by 4?
  24. 24.The ratio of boys to girls in a class is 6 : 1. There are 30 boys. How many girls are there?
  25. 25.What percent of 25 is 14?
  26. 26.1/2 × 2/3 =
  27. 27.If 9 mangoes cost ₹90, how much do 14 mangoes cost (in ₹)?
  28. 28.Write 22/25 as a percent.
  29. 29.Which is closest to 300 × 81? (Round each number first.) (a) 240000 (b) 48000 (c) 24000 (d) 2400
  30. 30.Which is closest to 497 × 59? (Round each number first.) (a) 30000 (b) 60000 (c) 3000 (d) 300000
  31. 31.Two tanks hold 60 litres and 90 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  32. 32.14.4 ÷ 6 =
  33. 33.Find the smallest number bigger than 5 that leaves a remainder of 1 when divided by 4, 3 or 5.
  34. 34.70 ÷ 7 × 4 + 13 =
  35. 35.10 ÷ 5 × 2 + 28 =
  36. 36.6 : 11 = 54 : ?
  37. 37.Which of these numbers divides exactly by 6? (a) 9929 (b) 3822 (c) 9152 (d) 6400
  38. 38.If 2 kg of rice costs ₹178, how many kg can you buy for ₹890?
  39. 39.The HCF of two numbers is 9 and their LCM is 189. One of the numbers is 63. What is the other number?
  40. 40.Diya takes 90 seconds and Isha 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?

Answer key

  1. 171
  2. 24
  3. 30
  4. 40
  5. 25
  6. 120
  7. 16
  8. 2
  9. 122
  10. 120
  11. 5
  12. 72000
  13. 12
  14. 39.4
  15. 19.7
  16. 8
  17. 90
  18. 288
  19. 1/6
  20. 72
  21. 60
  22. 21
  23. 3
  24. 5
  25. 56
  26. 1/3
  27. 140
  28. 88
  29. 24000
  30. 30000
  31. 30
  32. 2.4
  33. 61
  34. 53
  35. 32
  36. 99
  37. 3822
  38. 10
  39. 27
  40. 720

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