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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 179 · 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.Find the third proportional to 3 and 12 (that is, 3 : 12 = 12 : ?).
  2. 2.What is 80% of 375?
  3. 3.1.4 × 9 =
  4. 4.What is the smallest number you must take away from 298 so that it divides exactly by 3?
  5. 5.A hall floor is 350 cm long and 250 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  6. 6.Find the third proportional to 8 and 32 (that is, 8 : 32 = 32 : ?).
  7. 7.What is the smallest number you must take away from 197 so that it divides exactly by 3?
  8. 8.8 painters can paint a school in 27 days. How many days would 18 painters take, working at the same speed?
  9. 9.What is 25% of 124?
  10. 10.Which is closest to 1796 ÷ 19? (a) 900 (b) 90 (c) 180 (d) 45
  11. 11.Divide ₹21 between Arjun and Karan in the ratio 1 : 2. How much does Karan get (in ₹)?
  12. 12.If 5 erasers cost ₹80, how much do 15 erasers cost (in ₹)?
  13. 13.How many factors does 69 have?
  14. 14.What is 1/3 of 60 students?
  15. 15.Find the third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
  16. 16.63 ÷ 7 × 7 + 27 =
  17. 17.24 ÷ 8 × 9 + 4 =
  18. 18.Round 22302 to the nearest thousand.
  19. 19.Divide ₹133 between Farhan and Rohan in the ratio 6 : 1. How much does Farhan get (in ₹)?
  20. 20.1/3 × 8/9 =
  21. 21.A hostel has enough food for 9 students for 8 days. How many days will the same food last for 4 students?
  22. 22.Which is closest to 904 ÷ 29? (a) 15 (b) 30 (c) 60 (d) 300
  23. 23.How many factors does 63 have?
  24. 24.Find the LCM of 28 and 32.
  25. 25.7/10 + 1/7 =
  26. 26.Find the LCM of 20 and 36.
  27. 27.Find the LCM of 10 and 18.
  28. 28.8 : 7 = 72 : ?
  29. 29.Manav takes 48 seconds and Vivaan 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?
  30. 30.If 2 pencil boxes cost ₹98, how much do 7 pencil boxes cost (in ₹)?
  31. 31.4 : 3 = 16 : ?
  32. 32.Two tanks hold 300 litres and 250 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  33. 33.24 ÷ 2 × 5 + 27 =
  34. 34.2.74 + 2.8 =
  35. 35.Find the HCF of 35 and 21.
  36. 36.2/12 − 1/8 =
  37. 37.Which is closest to 299 + 403 + 705? (a) 1400 (b) 1500 (c) 1600 (d) 1300
  38. 38.Find the HCF of 21 and 12.
  39. 39.Ananya scored 48 marks out of 50 in a test. What percentage did Ananya score?
  40. 40.The HCF of two numbers is 2 and their LCM is 42. One of the numbers is 14. What is the other number?

Answer key

  1. 48
  2. 300
  3. 12.6
  4. 1
  5. 35
  6. 128
  7. 2
  8. 12
  9. 31
  10. 90
  11. 14
  12. 240
  13. 4
  14. 20
  15. 32
  16. 90
  17. 31
  18. 22000
  19. 114
  20. 8/27
  21. 18
  22. 30
  23. 6
  24. 224
  25. 59/70
  26. 180
  27. 90
  28. 63
  29. 240
  30. 343
  31. 12
  32. 50
  33. 87
  34. 5.54
  35. 7
  36. 1/24
  37. 1400
  38. 3
  39. 96
  40. 6

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