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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 579 · 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.(8 + 2) × 2 − 6 =
  2. 2.Two tanks hold 120 litres and 150 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  3. 3.39 − 45 ÷ 9 × 7 =
  4. 4.Divide ₹140 between Aditya and Ananya in the ratio 3 : 4. How much does Aditya get (in ₹)?
  5. 5.3 : 2 = 18 : ?
  6. 6.2 × (22 − 5) + 14 ÷ 7 =
  7. 7.Divide ₹480 between Aditya and Karan in the ratio 7 : 8. How much does Aditya get (in ₹)?
  8. 8.39 + 3 × 12 − 11 =
  9. 9.Find the LCM of 48 and 30.
  10. 10.Find the LCM of 3, 9 and 11.
  11. 11.Which of these numbers divides exactly by 11? (a) 7931 (b) 2301 (c) 2260 (d) 4255
  12. 12.What is the smallest number you must take away from 580 so that it divides exactly by 8?
  13. 13.The HCF of two numbers is 2 and their LCM is 56. One of the numbers is 8. What is the other number?
  14. 14.Which is closest to 204 × 89? (Round each number first.) (a) 36000 (b) 180000 (c) 1800 (d) 18000
  15. 15.A hostel has enough food for 7 students for 9 days. How many days will the same food last for 9 students?
  16. 16.How many factors does 55 have?
  17. 17.9.48 + 5.5 =
  18. 18.Find the LCM of 3, 8 and 4.
  19. 19.1/5 of 30 + 8 × 4 =
  20. 20.30% of a number is 129. What is the number?
  21. 21.What is the smallest number you must add to 557 so that it divides exactly by 9?
  22. 22.Sneha takes 90 seconds and Manav takes 40 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?
  23. 23.Find the HCF of 90 and 75.
  24. 24.What is the smallest number you must add to 103 so that it divides exactly by 6?
  25. 25.What is 5/8 of 40 students?
  26. 26.What is the smallest number you must add to 419 so that it divides exactly by 4?
  27. 27.Two tanks hold 90 litres and 50 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  28. 28.Find the HCF of 42 and 48.
  29. 29.24 + 5 × 9 − 7 =
  30. 30.Find the HCF of 135 and 120.
  31. 31.23 − 18 ÷ 6 × 2 =
  32. 32.5 : 2 = 15 : ?
  33. 33.Find the LCM of 14, 3 and 9.
  34. 34.Three temple bells ring every 18, 9 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  35. 35.3/4 + 7/9 =
  36. 36.Sneha scored 2 marks out of 40 in a test. What percentage did Sneha score?
  37. 37.9 painters can paint a school in 13 days. How many days would 13 painters take, working at the same speed?
  38. 38.A hostel has enough food for 3 students for 21 days. How many days will the same food last for 21 students?
  39. 39.Find the third proportional to 5 and 20 (that is, 5 : 20 = 20 : ?).
  40. 40.Which of these numbers divides exactly by 8? (a) 1838 (b) 9079 (c) 7471 (d) 2656

Answer key

  1. 14
  2. 30
  3. 4
  4. 60
  5. 12
  6. 36
  7. 224
  8. 64
  9. 240
  10. 99
  11. 7931
  12. 4
  13. 14
  14. 18000
  15. 7
  16. 4
  17. 14.98
  18. 24
  19. 38
  20. 430
  21. 1
  22. 360
  23. 15
  24. 5
  25. 25
  26. 1
  27. 10
  28. 6
  29. 62
  30. 15
  31. 17
  32. 6
  33. 126
  34. 36
  35. 55/36
  36. 5
  37. 9
  38. 3
  39. 80
  40. 2656

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