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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 188 · 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 HCF of two numbers is 6 and their LCM is 240. One of the numbers is 30. What is the other number?
  2. 2.What percent of 400 is 152?
  3. 3.1/2 of 16 + 4 × 7 =
  4. 4.20 + 11 × 3 − 7 =
  5. 5.Kabir takes 72 seconds and Arjun takes 30 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.Which is closest to 803 + 498 + 305? (a) 1600 (b) 1700 (c) 1800 (d) 1500
  7. 7.Find the LCM of 8, 10 and 3.
  8. 8.The HCF of two numbers is 9 and their LCM is 135. One of the numbers is 45. What is the other number?
  9. 9.What is the smallest number you must take away from 852 so that it divides exactly by 11?
  10. 10.Find the third proportional to 3 and 9 (that is, 3 : 9 = 9 : ?).
  11. 11.What percent of 20 is 1?
  12. 12.1/3 of 33 + 8 × 7 =
  13. 13.A car goes 46 km on 2 litres of petrol. How far can it go on 19 litres (in km)?
  14. 14.What is the smallest number you must take away from 976 so that it divides exactly by 7?
  15. 15.What is 150% of 178?
  16. 16.Which is closest to 992 ÷ 21? (a) 25 (b) 50 (c) 100 (d) 500
  17. 17.2/10 × 9/12 =
  18. 18.What is 4/5 of 25 litres?
  19. 19.Find the third proportional to 6 and 30 (that is, 6 : 30 = 30 : ?).
  20. 20.If 6 kg of rice costs ₹138, how many kg can you buy for ₹207?
  21. 21.24.5 ÷ 7 =
  22. 22.How many factors does 14 have?
  23. 23.A car goes 150 km on 6 litres of petrol. How far can it go on 30 litres (in km)?
  24. 24.What percent of 20 is 16?
  25. 25.6/7 − 2/6 =
  26. 26.If 6 mangoes cost ₹204, how much do 16 mangoes cost (in ₹)?
  27. 27.Divide ₹611 between Kabir and Arjun in the ratio 4 : 9. How much does Kabir get (in ₹)?
  28. 28.A hostel has enough food for 11 students for 23 days. How many days will the same food last for 23 students?
  29. 29.A car goes 70 km on 7 litres of petrol. How far can it go on 19 litres (in km)?
  30. 30.The HCF of two numbers is 8 and their LCM is 224. One of the numbers is 56. What is the other number?
  31. 31.The ratio of boys to girls in a class is 4 : 9. There are 8 boys. How many girls are there?
  32. 32.Find the LCM of 11, 7 and 2.
  33. 33.A hostel has enough food for 10 students for 29 days. How many days will the same food last for 5 students?
  34. 34.What is the smallest number you must take away from 853 so that it divides exactly by 6?
  35. 35.If 6 kites cost ₹222, how much do 8 kites cost (in ₹)?
  36. 36.75% of a number is 42. What is the number?
  37. 37.Round 8278 to the nearest ten.
  38. 38.What is the smallest number you must take away from 139 so that it divides exactly by 9?
  39. 39.7 : 9 = 35 : ?
  40. 40.How many factors does 50 have?

Answer key

  1. 48
  2. 38
  3. 36
  4. 46
  5. 360
  6. 1600
  7. 120
  8. 27
  9. 5
  10. 27
  11. 5
  12. 67
  13. 437
  14. 3
  15. 267
  16. 50
  17. 3/20
  18. 20
  19. 150
  20. 9
  21. 3.5
  22. 4
  23. 750
  24. 80
  25. 11/21
  26. 544
  27. 188
  28. 11
  29. 190
  30. 32
  31. 18
  32. 154
  33. 58
  34. 1
  35. 296
  36. 56
  37. 8280
  38. 4
  39. 45
  40. 6

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