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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 31 · 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.The ratio of boys to girls in a class is 7 : 2. There are 35 boys. How many girls are there?
  2. 2.Round 75.12 to one decimal place. =
  3. 3.A car goes 84 km on 7 litres of petrol. How far can it go on 34 litres (in km)?
  4. 4.Rahul scored 15 marks out of 50 in a test. What percentage did Rahul score?
  5. 5.Karan takes 36 seconds and Arjun 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?
  6. 6.A hostel has enough food for 12 students for 19 days. How many days will the same food last for 4 students?
  7. 7.Which of these numbers divides exactly by 11? (a) 3872 (b) 7232 (c) 5460 (d) 6443
  8. 8.18 + 10 × 4 − 9 =
  9. 9.13 − 36 ÷ 9 × 2 =
  10. 10.Three temple bells ring every 12, 9 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  11. 11.48 ÷ 8 × 6 + 3 =
  12. 12.12% of a number is 30. What is the number?
  13. 13.3 : 15 = 18 : ?
  14. 14.1/4 × 9/12 =
  15. 15.What is 80% of 215?
  16. 16.Find the LCM of 25 and 35.
  17. 17.Divide ₹319 between Ishaan and Meera in the ratio 7 : 4. How much does Ishaan get (in ₹)?
  18. 18.Which of these numbers divides exactly by 8? (a) 5046 (b) 6036 (c) 4188 (d) 7608
  19. 19.Round 44.79 to one decimal place. =
  20. 20.How many factors does 71 have?
  21. 21.A car goes 180 km on 12 litres of petrol. How far can it go on 34 litres (in km)?
  22. 22.Find the third proportional to 5 and 20 (that is, 5 : 20 = 20 : ?).
  23. 23.What is the smallest number you must add to 352 so that it divides exactly by 6?
  24. 24.30% of a number is 156. What is the number?
  25. 25.What is the smallest number you must take away from 877 so that it divides exactly by 9?
  26. 26.2/3 of 9 + 4 × 4 =
  27. 27.Find the HCF of 28 and 35.
  28. 28.8 × (19 − 6) + 4 ÷ 2 =
  29. 29.Find the HCF of 36 and 28.
  30. 30.5 : 12 = 40 : ?
  31. 31.The HCF of two numbers is 6 and their LCM is 144. One of the numbers is 48. What is the other number?
  32. 32.Round 5900 to the nearest thousand.
  33. 33.Find the LCM of 8, 9 and 3.
  34. 34.Round 56.37 to one decimal place. =
  35. 35.Find the smallest number bigger than 12 that leaves a remainder of 3 when divided by 12, 10 or 4.
  36. 36.What is 1/3 of 18 litres?
  37. 37.Priya takes 48 seconds and Zoya takes 80 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?
  38. 38.Kabir scored 19 marks out of 25 in a test. What percentage did Kabir score?
  39. 39.Which is closest to 502 + 197 + 897? (a) 1600 (b) 1800 (c) 1700 (d) 1500
  40. 40.Find the LCM of 15, 5 and 3.

Answer key

  1. 10
  2. 75.1
  3. 408
  4. 30
  5. 180
  6. 57
  7. 3872
  8. 49
  9. 5
  10. 36
  11. 39
  12. 250
  13. 90
  14. 3/16
  15. 172
  16. 175
  17. 203
  18. 7608
  19. 44.8
  20. 2
  21. 510
  22. 80
  23. 2
  24. 520
  25. 4
  26. 22
  27. 7
  28. 106
  29. 4
  30. 96
  31. 18
  32. 6000
  33. 72
  34. 56.4
  35. 63
  36. 6
  37. 240
  38. 76
  39. 1600
  40. 15

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