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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 804 · 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.What is 10% of 330?
  2. 2.A hall floor is 200 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  3. 3.What is the smallest number you must add to 197 so that it divides exactly by 3?
  4. 4.How many factors does 77 have?
  5. 5.Round 78.18 to one decimal place. =
  6. 6.Find the LCM of 3, 4 and 14.
  7. 7.Which is closest to 305 + 104 + 905? (a) 1200 (b) 1500 (c) 1400 (d) 1300
  8. 8.The HCF of two numbers is 8 and their LCM is 80. One of the numbers is 16. What is the other number?
  9. 9.What is the smallest number you must take away from 859 so that it divides exactly by 9?
  10. 10.Round 94.27 to one decimal place. =
  11. 11.Find the LCM of 6 and 21.
  12. 12.The HCF of two numbers is 5 and their LCM is 140. One of the numbers is 35. What is the other number?
  13. 13.What is the smallest number you must take away from 365 so that it divides exactly by 3?
  14. 14.5/6 + 1/2 =
  15. 15.Write 39/50 as a percent.
  16. 16.Round 39.87 to one decimal place. =
  17. 17.How many factors does 23 have?
  18. 18.Write 41/50 as a percent.
  19. 19.What percent of 500 is 200?
  20. 20.Round 90177 to the nearest hundred.
  21. 21.120% of a number is 378. What is the number?
  22. 22.Karan scored 9 marks out of 20 in a test. What percentage did Karan score?
  23. 23.What is 4/7 of 98 km?
  24. 24.Which is closest to 199 × 39? (Round each number first.) (a) 16000 (b) 800 (c) 80000 (d) 8000
  25. 25.Round 45824 to the nearest thousand.
  26. 26.What is the smallest number you must add to 537 so that it divides exactly by 11?
  27. 27.The ratio of boys to girls in a class is 7 : 2. There are 49 boys. How many girls are there?
  28. 28.What is the smallest number you must add to 225 so that it divides exactly by 6?
  29. 29.3 : 10 = 15 : ?
  30. 30.Kabir scored 20 marks out of 40 in a test. What percentage did Kabir score?
  31. 31.Find the third proportional to 5 and 25 (that is, 5 : 25 = 25 : ?).
  32. 32.Round 31.07 to one decimal place. =
  33. 33.Which is closest to 591 ÷ 29? (a) 40 (b) 10 (c) 20 (d) 200
  34. 34.Two tanks hold 150 litres and 350 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  35. 35.The HCF of two numbers is 6 and their LCM is 72. One of the numbers is 18. What is the other number?
  36. 36.14 + 2 × 8 − 1 =
  37. 37.4/6 × 1/3 =
  38. 38.If 6 kg of rice costs ₹456, how many kg can you buy for ₹380?
  39. 39.What is the smallest number you must take away from 234 so that it divides exactly by 4?
  40. 40.Kabir takes 45 seconds and Tara 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?

Answer key

  1. 33
  2. 12
  3. 1
  4. 4
  5. 78.2
  6. 84
  7. 1300
  8. 40
  9. 4
  10. 94.3
  11. 42
  12. 20
  13. 2
  14. 4/3
  15. 78
  16. 39.9
  17. 2
  18. 82
  19. 40
  20. 90200
  21. 315
  22. 45
  23. 56
  24. 8000
  25. 46000
  26. 2
  27. 14
  28. 3
  29. 50
  30. 50
  31. 125
  32. 31.1
  33. 20
  34. 50
  35. 24
  36. 29
  37. 2/9
  38. 5
  39. 2
  40. 90

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