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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 380 · 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. 1.19.6 ÷ 2 =
  2. 2.The ratio of boys to girls in a class is 2 : 3. There are 8 boys. How many girls are there?
  3. 3.Find the LCM of 6, 3 and 11.
  4. 4.Which is closest to 998 ÷ 49? (a) 200 (b) 10 (c) 20 (d) 40
  5. 5.A hostel has enough food for 5 students for 26 days. How many days will the same food last for 10 students?
  6. 6.What is the smallest number you must take away from 643 so that it divides exactly by 3?
  7. 7.Find the LCM of 9 and 21.
  8. 8.Vivaan scored 2 marks out of 40 in a test. What percentage did Vivaan score?
  9. 9.Find the LCM of 16 and 12.
  10. 10.Three temple bells ring every 24, 6 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  11. 11.Divide ₹546 between Rohan and Aditya in the ratio 7 : 6. How much does Aditya get (in ₹)?
  12. 12.Kabir takes 30 seconds and Rohan 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?
  13. 13.A car goes 56 km on 4 litres of petrol. How far can it go on 16 litres (in km)?
  14. 14.Find the LCM of 36 and 28.
  15. 15.Divide ₹121 between Isha and Ananya in the ratio 5 : 6. How much does Ananya get (in ₹)?
  16. 16.Which is closest to 800 × 88? (Round each number first.) (a) 720000 (b) 7200 (c) 72000 (d) 144000
  17. 17.Arjun takes 54 seconds and Priya takes 90 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?
  18. 18.The HCF of two numbers is 3 and their LCM is 126. One of the numbers is 21. What is the other number?
  19. 19.Find the HCF of 54 and 42.
  20. 20.Three temple bells ring every 20, 12 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  21. 21.Which of these numbers divides exactly by 3? (a) 6512 (b) 9316 (c) 6365 (d) 2388
  22. 22.Which of these numbers divides exactly by 8? (a) 7139 (b) 8056 (c) 1020 (d) 8014
  23. 23.1/2 − 4/11 =
  24. 24.If 12 pencil boxes cost ₹204, how much do 16 pencil boxes cost (in ₹)?
  25. 25.7.8 × 3 =
  26. 26.37 + 6 × 3 − 30 =
  27. 27.5.3 × 4 =
  28. 28.4/7 + 6/9 =
  29. 29.Three temple bells ring every 12, 18 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  30. 30.Three temple bells ring every 15, 4 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  31. 31.The HCF of two numbers is 2 and their LCM is 12. One of the numbers is 4. What is the other number?
  32. 32.6.17 + 2.2 =
  33. 33.Rohan scored 4 marks out of 20 in a test. What percentage did Rohan score?
  34. 34.9 × (21 − 4) + 27 ÷ 3 =
  35. 35.What is 5/9 of ₹99?
  36. 36.Write 1/50 as a percent.
  37. 37.6.5 × 3 =
  38. 38.2.18 + 7.8 =
  39. 39.What is the smallest number you must add to 479 so that it divides exactly by 12?
  40. 40.2.1 × 7 =

Answer key

  1. 9.8
  2. 12
  3. 66
  4. 20
  5. 13
  6. 1
  7. 63
  8. 5
  9. 48
  10. 120
  11. 252
  12. 90
  13. 224
  14. 252
  15. 66
  16. 72000
  17. 270
  18. 18
  19. 6
  20. 120
  21. 2388
  22. 8056
  23. 3/22
  24. 272
  25. 23.4
  26. 25
  27. 21.2
  28. 26/21
  29. 72
  30. 60
  31. 6
  32. 8.37
  33. 20
  34. 162
  35. 55
  36. 2
  37. 19.5
  38. 9.98
  39. 1
  40. 14.7

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