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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 306 · 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 HCF of 27 and 45.
  2. 2.The HCF of two numbers is 9 and their LCM is 216. One of the numbers is 72. What is the other number?
  3. 3.The ratio of boys to girls in a class is 1 : 9. There are 8 boys. How many girls are there?
  4. 4.What is 3/5 of 35 km?
  5. 5.Which is closest to 804 × 21? (Round each number first.) (a) 16000 (b) 160000 (c) 1600 (d) 32000
  6. 6.The ratio of boys to girls in a class is 3 : 1. There are 27 boys. How many girls are there?
  7. 7.How many factors does 63 have?
  8. 8.Write 1/4 as a percent.
  9. 9.Find the HCF of 49 and 42.
  10. 10.Which is closest to 804 × 59? (Round each number first.) (a) 480000 (b) 96000 (c) 48000 (d) 4800
  11. 11.1/2 of 6 + 9 × 9 =
  12. 12.Round 94398 to the nearest hundred.
  13. 13.120% of a number is 486. What is the number?
  14. 14.A car goes 24 km on 3 litres of petrol. How far can it go on 18 litres (in km)?
  15. 15.30.5 ÷ 5 =
  16. 16.Round 48911 to the nearest thousand.
  17. 17.13 ÷ 5 =
  18. 18.2/6 × 2/9 =
  19. 19.10 + 7 × 8 − 8 =
  20. 20.If 4 kg of rice costs ₹96, how many kg can you buy for ₹120?
  21. 21.Manav scored 28 marks out of 80 in a test. What percentage did Manav score?
  22. 22.Divide ₹294 between Dev and Ananya in the ratio 3 : 4. How much does Ananya get (in ₹)?
  23. 23.What is 8/9 of 45 kg?
  24. 24.3.4 ÷ 2 =
  25. 25.Which is closest to 699 × 82? (Round each number first.) (a) 56000 (b) 112000 (c) 560000 (d) 5600
  26. 26.Round 37872 to the nearest hundred.
  27. 27.20% of a number is 18. What is the number?
  28. 28.What is 5/6 of 84 kg?
  29. 29.26 − 32 ÷ 4 × 3 =
  30. 30.15% of a number is 24. What is the number?
  31. 31.Two tanks hold 125 litres and 75 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  32. 32.Which is closest to 3495 ÷ 51? (a) 35 (b) 140 (c) 700 (d) 70
  33. 33.Find the LCM of 42 and 48.
  34. 34.Which is closest to 605 + 498 + 100? (a) 1400 (b) 1200 (c) 1100 (d) 1300
  35. 35.What is the smallest number you must add to 832 so that it divides exactly by 11?
  36. 36.Three temple bells ring every 4, 12 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  37. 37.A car goes 51 km on 3 litres of petrol. How far can it go on 20 litres (in km)?
  38. 38.Find the LCM of 5 and 7.
  39. 39.Vivaan takes 45 seconds and Sneha takes 60 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?
  40. 40.Find the third proportional to 7 and 21 (that is, 7 : 21 = 21 : ?).

Answer key

  1. 9
  2. 27
  3. 72
  4. 21
  5. 16000
  6. 9
  7. 6
  8. 25
  9. 7
  10. 48000
  11. 84
  12. 94400
  13. 405
  14. 144
  15. 6.1
  16. 49000
  17. 2.6
  18. 2/27
  19. 58
  20. 5
  21. 35
  22. 168
  23. 40
  24. 1.7
  25. 56000
  26. 37900
  27. 90
  28. 70
  29. 2
  30. 160
  31. 25
  32. 70
  33. 336
  34. 1200
  35. 4
  36. 60
  37. 340
  38. 35
  39. 180
  40. 63

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