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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 27 · 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 20 and 36.
  2. 2.Three temple bells ring every 15, 6 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  3. 3.Kabir scored 9 marks out of 20 in a test. What percentage did Kabir score?
  4. 4.How many factors does 30 have?
  5. 5.A hall floor is 120 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  6. 6.Which is closest to 503 + 98 + 205? (a) 1000 (b) 700 (c) 900 (d) 800
  7. 7.What is 4/9 of ₹162?
  8. 8.3/7 + 2/9 =
  9. 9.Which is closest to 807 ÷ 39? (a) 40 (b) 20 (c) 10 (d) 200
  10. 10.Meera takes 40 seconds and Aditya takes 45 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 smallest number bigger than 12 that leaves a remainder of 4 when divided by 10, 6 or 12.
  12. 12.47 + 3 × 5 − 9 =
  13. 13.A hostel has enough food for 4 students for 4 days. How many days will the same food last for 8 students?
  14. 14.55 − 48 ÷ 6 × 4 =
  15. 15.What is 5/6 of ₹114?
  16. 16.4 : 2 = 36 : ?
  17. 17.A hall floor is 200 cm long and 175 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  18. 18.Write 43/50 as a percent.
  19. 19.Kabir takes 50 seconds and Aditya takes 45 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?
  20. 20.What is 75% of 568?
  21. 21.Divide ₹490 between Vivaan and Dev in the ratio 3 : 7. How much does Vivaan get (in ₹)?
  22. 22.8.01 + 2.9 =
  23. 23.80.1 ÷ 9 =
  24. 24.The HCF of two numbers is 3 and their LCM is 42. One of the numbers is 6. What is the other number?
  25. 25.Find the HCF of 70 and 112.
  26. 26.How many factors does 33 have?
  27. 27.25 ÷ 5 × 3 + 21 =
  28. 28.35 + 5 × 4 − 31 =
  29. 29.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 9, 10 or 3.
  30. 30.Round 77.58 to one decimal place. =
  31. 31.Find the LCM of 18 and 4.
  32. 32.Find the LCM of 3, 6 and 11.
  33. 33.A hall floor is 350 cm long and 300 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  34. 34.Find the smallest number bigger than 12 that leaves a remainder of 3 when divided by 12, 4 or 10.
  35. 35.What is the smallest number you must add to 933 so that it divides exactly by 4?
  36. 36.(12 + 20) × 2 − 7 =
  37. 37.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 6, 15 or 8.
  38. 38.Three temple bells ring every 4, 30 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  39. 39.What percent of 40 is 18?
  40. 40.Which is closest to 802 + 901 + 504? (a) 2300 (b) 2400 (c) 2100 (d) 2200

Answer key

  1. 4
  2. 120
  3. 45
  4. 8
  5. 12
  6. 800
  7. 72
  8. 41/63
  9. 20
  10. 360
  11. 64
  12. 53
  13. 2
  14. 23
  15. 95
  16. 18
  17. 56
  18. 86
  19. 450
  20. 426
  21. 147
  22. 10.91
  23. 8.9
  24. 21
  25. 14
  26. 4
  27. 36
  28. 24
  29. 91
  30. 77.6
  31. 36
  32. 66
  33. 42
  34. 63
  35. 3
  36. 57
  37. 121
  38. 60
  39. 45
  40. 2200

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