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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 550 · 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.Round 75.09 to one decimal place. =
  2. 2.What is the smallest number you must take away from 371 so that it divides exactly by 12?
  3. 3.72 ÷ 8 × 9 + 15 =
  4. 4.Find the HCF of 50 and 40.
  5. 5.How many factors does 20 have?
  6. 6.Which of these numbers divides exactly by 11? (a) 7167 (b) 5170 (c) 5903 (d) 1138
  7. 7.8 ÷ 4 × 3 + 23 =
  8. 8.If 9 kg of rice costs ₹738, how many kg can you buy for ₹1230?
  9. 9.What is the smallest number you must add to 629 so that it divides exactly by 6?
  10. 10.What is the smallest number you must add to 787 so that it divides exactly by 8?
  11. 11.The HCF of two numbers is 7 and their LCM is 294. One of the numbers is 42. What is the other number?
  12. 12.Find the HCF of 6 and 10.
  13. 13.Divide ₹432 between Aditya and Zoya in the ratio 5 : 7. How much does Aditya get (in ₹)?
  14. 14.Which of these numbers divides exactly by 4? (a) 3497 (b) 3441 (c) 9152 (d) 4322
  15. 15.Round 24.77 to one decimal place. =
  16. 16.What is 12% of 400?
  17. 17.2/3 + 3/11 =
  18. 18.The ratio of boys to girls in a class is 7 : 1. There are 28 boys. How many girls are there?
  19. 19.If 5 kg of rice costs ₹255, how many kg can you buy for ₹561?
  20. 20.Two tanks hold 75 litres and 125 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  21. 21.How many factors does 89 have?
  22. 22.Which of these numbers divides exactly by 9? (a) 9216 (b) 8311 (c) 2356 (d) 1852
  23. 23.If 10 cricket balls cost ₹430, how much do 13 cricket balls cost (in ₹)?
  24. 24.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 8, 10 or 3.
  25. 25.Round 56728 to the nearest ten.
  26. 26.What is the smallest number you must add to 179 so that it divides exactly by 6?
  27. 27.Divide ₹156 between Saanvi and Farhan in the ratio 8 : 5. How much does Saanvi get (in ₹)?
  28. 28.Find the HCF of 12 and 32.
  29. 29.2 : 13 = 12 : ?
  30. 30.What is 50% of 314?
  31. 31.1/6 of 12 + 4 × 5 =
  32. 32.The ratio of boys to girls in a class is 3 : 5. There are 6 boys. How many girls are there?
  33. 33.Which is closest to 396 × 51? (Round each number first.) (a) 2000 (b) 20000 (c) 200000 (d) 40000
  34. 34.The HCF of two numbers is 7 and their LCM is 252. One of the numbers is 28. What is the other number?
  35. 35.What is 1/2 of 38 km?
  36. 36.What is 10% of 260?
  37. 37.Which is closest to 605 + 699 + 699? (a) 2200 (b) 1900 (c) 2000 (d) 2100
  38. 38.What is 30% of 110?
  39. 39.Find the smallest number bigger than 10 that leaves a remainder of 2 when divided by 4, 10 or 6.
  40. 40.Find the LCM of 9 and 15.

Answer key

  1. 75.1
  2. 11
  3. 96
  4. 10
  5. 6
  6. 5170
  7. 29
  8. 15
  9. 1
  10. 5
  11. 49
  12. 2
  13. 180
  14. 9152
  15. 24.8
  16. 48
  17. 31/33
  18. 4
  19. 11
  20. 25
  21. 2
  22. 9216
  23. 559
  24. 121
  25. 56730
  26. 1
  27. 96
  28. 4
  29. 78
  30. 157
  31. 22
  32. 10
  33. 20000
  34. 63
  35. 19
  36. 26
  37. 2000
  38. 33
  39. 62
  40. 45

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