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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 276 · 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.Divide ₹441 between Arjun and Kabir in the ratio 5 : 4. How much does Kabir get (in ₹)?
  2. 2.How many factors does 85 have?
  3. 3.The ratio of boys to girls in a class is 9 : 7. There are 63 boys. How many girls are there?
  4. 4.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 15, 9 or 4.
  5. 5.A car goes 120 km on 8 litres of petrol. How far can it go on 21 litres (in km)?
  6. 6.What is 5% of 40?
  7. 7.What is the smallest number you must add to 124 so that it divides exactly by 12?
  8. 8.How many factors does 91 have?
  9. 9.The ratio of boys to girls in a class is 7 : 8. There are 56 boys. How many girls are there?
  10. 10.Which of these numbers divides exactly by 3? (a) 3056 (b) 2299 (c) 1541 (d) 3663
  11. 11.Aditya takes 36 seconds and Aarav takes 45 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?
  12. 12.Find the smallest number bigger than 9 that leaves a remainder of 1 when divided by 5, 6 or 9.
  13. 13.4 × (14 − 1) + 6 ÷ 3 =
  14. 14.What is the smallest number you must add to 829 so that it divides exactly by 11?
  15. 15.Find the LCM of 15, 14 and 7.
  16. 16.If 2 kg of rice costs ₹76, how many kg can you buy for ₹152?
  17. 17.What is 4/9 of 54 kg?
  18. 18.Find the HCF of 25 and 20.
  19. 19.Find the HCF of 18 and 21.
  20. 20.Which of these numbers divides exactly by 3? (a) 5792 (b) 6637 (c) 5460 (d) 7267
  21. 21.A hall floor is 350 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  22. 22.9.8 × 8 =
  23. 23.What is 1/4 of ₹40?
  24. 24.Round 23750 to the nearest thousand.
  25. 25.What is the smallest number you must add to 319 so that it divides exactly by 6?
  26. 26.Which of these numbers divides exactly by 9? (a) 2907 (b) 6015 (c) 1538 (d) 1592
  27. 27.Find the third proportional to 2 and 6 (that is, 2 : 6 = 6 : ?).
  28. 28.6/8 − 1/2 =
  29. 29.Which is closest to 598 + 96 + 400? (a) 1300 (b) 1200 (c) 1000 (d) 1100
  30. 30.Find the third proportional to 9 and 36 (that is, 9 : 36 = 36 : ?).
  31. 31.Three temple bells ring every 15, 8 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  32. 32.10/12 − 5/9 =
  33. 33.The ratio of boys to girls in a class is 2 : 7. There are 20 boys. How many girls are there?
  34. 34.Three temple bells ring every 24, 9 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  35. 35.Nisha takes 40 seconds and Diya takes 36 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?
  36. 36.Two tanks hold 180 litres and 160 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  37. 37.53 − 21 ÷ 7 × 8 =
  38. 38.The ratio of boys to girls in a class is 9 : 1. There are 18 boys. How many girls are there?
  39. 39.Find the HCF of 40 and 50.
  40. 40.Divide ₹110 between Karan and Vivaan in the ratio 1 : 9. How much does Vivaan get (in ₹)?

Answer key

  1. 196
  2. 4
  3. 49
  4. 182
  5. 315
  6. 2
  7. 8
  8. 4
  9. 64
  10. 3663
  11. 180
  12. 91
  13. 54
  14. 7
  15. 210
  16. 4
  17. 24
  18. 5
  19. 3
  20. 5460
  21. 14
  22. 78.4
  23. 10
  24. 24000
  25. 5
  26. 2907
  27. 18
  28. 1/4
  29. 1100
  30. 144
  31. 120
  32. 5/18
  33. 70
  34. 72
  35. 360
  36. 20
  37. 29
  38. 2
  39. 10
  40. 99

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