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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 93 · 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. 1.45 ÷ 5 × 8 + 12 =
  2. 2.Write 1/2 as a percent.
  3. 3.How many factors does 33 have?
  4. 4.Find the HCF of 65 and 78.
  5. 5.Which is closest to 101 + 497 + 102? (a) 700 (b) 800 (c) 900 (d) 600
  6. 6.4 × (17 − 5) + 72 ÷ 9 =
  7. 7.What is the smallest number you must take away from 238 so that it divides exactly by 8?
  8. 8.38 + 2 × 6 − 9 =
  9. 9.Two tanks hold 30 litres and 40 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  10. 10.Find the LCM of 18 and 12.
  11. 11.Find the LCM of 12, 11 and 3.
  12. 12.Which is closest to 1491 ÷ 49? (a) 15 (b) 60 (c) 30 (d) 300
  13. 13.Round 14.38 to one decimal place. =
  14. 14.Which is closest to 503 × 92? (Round each number first.) (a) 4500 (b) 90000 (c) 450000 (d) 45000
  15. 15.Divide ₹117 between Karan and Ananya in the ratio 6 : 7. How much does Karan get (in ₹)?
  16. 16.A hostel has enough food for 5 students for 13 days. How many days will the same food last for 13 students?
  17. 17.What is the smallest number you must add to 867 so that it divides exactly by 9?
  18. 18.The HCF of two numbers is 3 and their LCM is 126. One of the numbers is 21. What is the other number?
  19. 19.Two tanks hold 40 litres and 60 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  20. 20.Round 31.79 to one decimal place. =
  21. 21.A car goes 132 km on 6 litres of petrol. How far can it go on 33 litres (in km)?
  22. 22.36 − 18 ÷ 9 × 7 =
  23. 23.31 − 12 ÷ 6 × 2 =
  24. 24.What is the smallest number you must add to 969 so that it divides exactly by 4?
  25. 25.The HCF of two numbers is 6 and their LCM is 432. One of the numbers is 48. What is the other number?
  26. 26.Write 4/5 as a percent.
  27. 27.26.4 ÷ 8 =
  28. 28.Two tanks hold 250 litres and 200 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  29. 29.What percent of 400 is 60?
  30. 30.A hall floor is 90 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  31. 31.If 7 notebooks cost ₹84, how much do 4 notebooks cost (in ₹)?
  32. 32.Rohan scored 18 marks out of 40 in a test. What percentage did Rohan score?
  33. 33.Find the LCM of 54 and 42.
  34. 34.What is the smallest number you must take away from 548 so that it divides exactly by 7?
  35. 35.If 5 kg of rice costs ₹100, how many kg can you buy for ₹160?
  36. 36.Find the third proportional to 6 and 18 (that is, 6 : 18 = 18 : ?).
  37. 37.The HCF of two numbers is 7 and their LCM is 504. One of the numbers is 63. What is the other number?
  38. 38.Two tanks hold 180 litres and 140 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  39. 39.Find the LCM of 28 and 8.
  40. 40.Two tanks hold 60 litres and 105 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?

Answer key

  1. 84
  2. 50
  3. 4
  4. 13
  5. 700
  6. 56
  7. 6
  8. 41
  9. 10
  10. 36
  11. 132
  12. 30
  13. 14.4
  14. 45000
  15. 54
  16. 5
  17. 6
  18. 18
  19. 20
  20. 31.8
  21. 726
  22. 22
  23. 27
  24. 3
  25. 54
  26. 80
  27. 3.3
  28. 50
  29. 15
  30. 6
  31. 48
  32. 45
  33. 378
  34. 2
  35. 8
  36. 54
  37. 56
  38. 20
  39. 56
  40. 15

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