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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 716 · 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 third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
  2. 2.How many factors does 18 have?
  3. 3.Two tanks hold 180 litres and 210 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  4. 4.Which is closest to 100 + 202 + 202? (a) 400 (b) 500 (c) 700 (d) 600
  5. 5.What is the smallest number you must take away from 702 so that it divides exactly by 8?
  6. 6.What is 1/2 of ₹16?
  7. 7.The HCF of two numbers is 2 and their LCM is 36. One of the numbers is 4. What is the other number?
  8. 8.Find the LCM of 8, 6 and 5.
  9. 9.If 11 mangoes cost ₹165, how much do 2 mangoes cost (in ₹)?
  10. 10.40 + 2 × 10 − 12 =
  11. 11.What is the smallest number you must add to 389 so that it divides exactly by 6?
  12. 12.What percent of 500 is 115?
  13. 13.What is 50% of 34?
  14. 14.1/7 + 2/12 =
  15. 15.If 7 kites cost ₹84, how much do 15 kites cost (in ₹)?
  16. 16.A car goes 216 km on 12 litres of petrol. How far can it go on 10 litres (in km)?
  17. 17.Find the LCM of 8, 3 and 9.
  18. 18.Write 3/10 as a percent.
  19. 19.The HCF of two numbers is 9 and their LCM is 315. One of the numbers is 63. What is the other number?
  20. 20.What is the smallest number you must add to 856 so that it divides exactly by 3?
  21. 21.Find the HCF of 70 and 112.
  22. 22.If 5 kg of rice costs ₹195, how many kg can you buy for ₹468?
  23. 23.4.48 + 6.7 =
  24. 24.Two tanks hold 360 litres and 280 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  25. 25.(4 + 15) × 2 − 11 =
  26. 26.Find the HCF of 20 and 30.
  27. 27.A hall floor is 175 cm long and 75 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  28. 28.If 7 mangoes cost ₹112, how much do 5 mangoes cost (in ₹)?
  29. 29.Round 73.34 to one decimal place. =
  30. 30.What is the smallest number you must take away from 955 so that it divides exactly by 7?
  31. 31.What is the smallest number you must add to 734 so that it divides exactly by 4?
  32. 32.How many factors does 17 have?
  33. 33.Divide ₹408 between Nisha and Meera in the ratio 8 : 9. How much does Nisha get (in ₹)?
  34. 34.What percent of 500 is 430?
  35. 35.Which is closest to 805 + 195 + 404? (a) 1300 (b) 1600 (c) 1400 (d) 1500
  36. 36.25% of a number is 76. What is the number?
  37. 37.1/5 of 45 + 6 × 3 =
  38. 38.A car goes 242 km on 11 litres of petrol. How far can it go on 32 litres (in km)?
  39. 39.What is the smallest number you must add to 138 so that it divides exactly by 4?
  40. 40.A hall floor is 100 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?

Answer key

  1. 32
  2. 6
  3. 30
  4. 500
  5. 6
  6. 8
  7. 18
  8. 120
  9. 30
  10. 48
  11. 1
  12. 23
  13. 17
  14. 13/42
  15. 180
  16. 180
  17. 72
  18. 30
  19. 45
  20. 2
  21. 14
  22. 12
  23. 11.18
  24. 40
  25. 27
  26. 10
  27. 21
  28. 80
  29. 73.3
  30. 3
  31. 2
  32. 2
  33. 192
  34. 86
  35. 1400
  36. 304
  37. 27
  38. 704
  39. 2
  40. 15

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