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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 476 · 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.How many factors does 70 have?
  2. 2.What is 60% of 100?
  3. 3.Find the smallest number bigger than 9 that leaves a remainder of 1 when divided by 9, 3 or 4.
  4. 4.Write 7/50 as a percent.
  5. 5.Pooja scored 36 marks out of 40 in a test. What percentage did Pooja score?
  6. 6.What is the smallest number you must add to 347 so that it divides exactly by 9?
  7. 7.Divide ₹371 between Aditya and Zoya in the ratio 2 : 5. How much does Aditya get (in ₹)?
  8. 8.Find the LCM of 13, 9 and 3.
  9. 9.Three temple bells ring every 5, 12 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  10. 10.Find the third proportional to 5 and 20 (that is, 5 : 20 = 20 : ?).
  11. 11.What is the smallest number you must take away from 517 so that it divides exactly by 13?
  12. 12.A hall floor is 420 cm long and 300 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  13. 13.Find the HCF of 60 and 84.
  14. 14.3 × (23 − 20) + 90 ÷ 9 =
  15. 15.The HCF of two numbers is 9 and their LCM is 135. One of the numbers is 45. What is the other number?
  16. 16.2/5 of 35 + 6 × 3 =
  17. 17.What is 120% of 225?
  18. 18.The HCF of two numbers is 3 and their LCM is 108. One of the numbers is 27. What is the other number?
  19. 19.What is the smallest number you must take away from 544 so that it divides exactly by 11?
  20. 20.Which is closest to 297 × 49? (Round each number first.) (a) 15000 (b) 1500 (c) 150000 (d) 30000
  21. 21.The HCF of two numbers is 6 and their LCM is 126. One of the numbers is 18. What is the other number?
  22. 22.Nisha scored 3 marks out of 20 in a test. What percentage did Nisha score?
  23. 23.3.14 + 9.5 =
  24. 24.Find the LCM of 3, 7 and 12.
  25. 25.Two tanks hold 25 litres and 40 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  26. 26.15% of a number is 39. What is the number?
  27. 27.How many factors does 74 have?
  28. 28.The ratio of boys to girls in a class is 5 : 6. There are 50 boys. How many girls are there?
  29. 29.What percent of 250 is 85?
  30. 30.What percent of 20 is 3?
  31. 31.Two tanks hold 25 litres and 30 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  32. 32.What is 40% of 200?
  33. 33.7 painters can paint a school in 20 days. How many days would 10 painters take, working at the same speed?
  34. 34.(16 + 2) × 3 − 5 =
  35. 35.Saanvi scored 30 marks out of 40 in a test. What percentage did Saanvi score?
  36. 36.If 7 kg of rice costs ₹574, how many kg can you buy for ₹328?
  37. 37.Three temple bells ring every 4, 12 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  38. 38.Three temple bells ring every 4, 9 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  39. 39.26.7 ÷ 3 =
  40. 40.Which of these numbers divides exactly by 9? (a) 3003 (b) 4825 (c) 9126 (d) 7970

Answer key

  1. 8
  2. 60
  3. 37
  4. 14
  5. 90
  6. 4
  7. 106
  8. 117
  9. 60
  10. 80
  11. 10
  12. 35
  13. 12
  14. 19
  15. 27
  16. 32
  17. 270
  18. 12
  19. 5
  20. 15000
  21. 42
  22. 15
  23. 12.64
  24. 84
  25. 5
  26. 260
  27. 4
  28. 60
  29. 34
  30. 15
  31. 5
  32. 80
  33. 14
  34. 49
  35. 75
  36. 4
  37. 60
  38. 36
  39. 8.9
  40. 9126

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