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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 353 · 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 8 and their LCM is 80. One of the numbers is 16. What is the other number?
  2. 2.Which of these numbers divides exactly by 4? (a) 5898 (b) 2806 (c) 2332 (d) 9985
  3. 3.15% of a number is 69. What is the number?
  4. 4.If 7 kg of rice costs ₹245, how many kg can you buy for ₹455?
  5. 5.Which is closest to 898 × 50? (Round each number first.) (a) 45000 (b) 90000 (c) 450000 (d) 4500
  6. 6.4.6 × 9 =
  7. 7.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 12, 10 or 9.
  8. 8.What is the smallest number you must take away from 421 so that it divides exactly by 11?
  9. 9.Find the LCM of 28 and 12.
  10. 10.A car goes 230 km on 10 litres of petrol. How far can it go on 4 litres (in km)?
  11. 11.A car goes 84 km on 6 litres of petrol. How far can it go on 5 litres (in km)?
  12. 12.Three temple bells ring every 6, 18 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  13. 13.1/2 of 18 + 6 × 6 =
  14. 14.Two tanks hold 35 litres and 25 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  15. 15.The ratio of boys to girls in a class is 6 : 5. There are 42 boys. How many girls are there?
  16. 16.Find the LCM of 21 and 12.
  17. 17.Which is closest to 3002 ÷ 51? (a) 30 (b) 600 (c) 120 (d) 60
  18. 18.How many factors does 32 have?
  19. 19.Which is closest to 3207 ÷ 41? (a) 160 (b) 80 (c) 800 (d) 40
  20. 20.What is the smallest number you must add to 314 so that it divides exactly by 7?
  21. 21.Which is closest to 199 + 804 + 803? (a) 1700 (b) 1900 (c) 2000 (d) 1800
  22. 22.Find the third proportional to 9 and 36 (that is, 9 : 36 = 36 : ?).
  23. 23.How many factors does 72 have?
  24. 24.Find the third proportional to 8 and 16 (that is, 8 : 16 = 16 : ?).
  25. 25.Which of these numbers divides exactly by 6? (a) 7685 (b) 9045 (c) 9324 (d) 3817
  26. 26.10 ÷ 4 =
  27. 27.Which is closest to 601 + 199 + 400? (a) 1300 (b) 1200 (c) 1100 (d) 1400
  28. 28.What is the smallest number you must take away from 543 so that it divides exactly by 11?
  29. 29.Which is closest to 2398 ÷ 41? (a) 600 (b) 60 (c) 120 (d) 30
  30. 30.A car goes 72 km on 6 litres of petrol. How far can it go on 2 litres (in km)?
  31. 31.A hostel has enough food for 4 students for 12 days. How many days will the same food last for 2 students?
  32. 32.A hall floor is 240 cm long and 180 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  33. 33.Meera scored 13 marks out of 25 in a test. What percentage did Meera score?
  34. 34.What is the smallest number you must take away from 236 so that it divides exactly by 11?
  35. 35.If 6 pens cost ₹78, how much do 10 pens cost (in ₹)?
  36. 36.How many factors does 71 have?
  37. 37.Which is closest to 896 + 197 + 804? (a) 1900 (b) 2000 (c) 1800 (d) 2100
  38. 38.60% of a number is 63. What is the number?
  39. 39.Find the LCM of 10, 8 and 4.
  40. 40.Which of these numbers divides exactly by 9? (a) 1629 (b) 9826 (c) 3311 (d) 2695

Answer key

  1. 40
  2. 2332
  3. 460
  4. 13
  5. 45000
  6. 41.4
  7. 181
  8. 3
  9. 84
  10. 92
  11. 70
  12. 90
  13. 45
  14. 5
  15. 35
  16. 84
  17. 60
  18. 6
  19. 80
  20. 1
  21. 1800
  22. 144
  23. 12
  24. 32
  25. 9324
  26. 2.5
  27. 1200
  28. 4
  29. 60
  30. 24
  31. 24
  32. 12
  33. 52
  34. 5
  35. 130
  36. 2
  37. 1900
  38. 105
  39. 40
  40. 1629

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