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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 574 · 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. 1.1/2 of 8 + 3 × 3 =
  2. 2.10 ÷ 2 × 9 + 20 =
  3. 3.The HCF of two numbers is 2 and their LCM is 24. One of the numbers is 6. What is the other number?
  4. 4.9 : 3 = 63 : ?
  5. 5.How many factors does 19 have?
  6. 6.If 6 kg of rice costs ₹432, how many kg can you buy for ₹216?
  7. 7.What is the smallest number you must add to 519 so that it divides exactly by 11?
  8. 8.Two tanks hold 75 litres and 90 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  9. 9.What is the smallest number you must add to 944 so that it divides exactly by 7?
  10. 10.7 painters can paint a school in 28 days. How many days would 4 painters take, working at the same speed?
  11. 11.The ratio of boys to girls in a class is 2 : 1. There are 16 boys. How many girls are there?
  12. 12.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?
  13. 13.1/2 + 3/6 =
  14. 14.What is the smallest number you must take away from 295 so that it divides exactly by 13?
  15. 15.The ratio of boys to girls in a class is 7 : 5. There are 63 boys. How many girls are there?
  16. 16.Find the LCM of 13, 2 and 10.
  17. 17.Divide ₹96 between Dev and Farhan in the ratio 7 : 5. How much does Farhan get (in ₹)?
  18. 18.7 × (15 − 4) + 60 ÷ 5 =
  19. 19.5/9 + 2/11 =
  20. 20.Round 77.09 to one decimal place. =
  21. 21.How many factors does 86 have?
  22. 22.2 : 10 = 6 : ?
  23. 23.Three temple bells ring every 4, 30 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  24. 24.(6 + 18) × 6 − 20 =
  25. 25.If 5 kg of rice costs ₹325, how many kg can you buy for ₹260?
  26. 26.Find the LCM of 7 and 2.
  27. 27.1/2 of 16 + 8 × 2 =
  28. 28.Nisha takes 30 seconds and Aditya takes 50 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?
  29. 29.Find the HCF of 15 and 35.
  30. 30.What percent of 50 is 38?
  31. 31.Ananya scored 8 marks out of 80 in a test. What percentage did Ananya score?
  32. 32.Which is closest to 1396 ÷ 19? (a) 70 (b) 35 (c) 140 (d) 700
  33. 33.How many factors does 52 have?
  34. 34.Manav scored 2 marks out of 40 in a test. What percentage did Manav score?
  35. 35.Kavya takes 36 seconds and Diya 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?
  36. 36.Two tanks hold 175 litres and 150 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  37. 37.Round 68629 to the nearest ten.
  38. 38.Find the HCF of 12 and 54.
  39. 39.Find the LCM of 20 and 36.
  40. 40.Find the HCF of 88 and 55.

Answer key

  1. 13
  2. 65
  3. 8
  4. 21
  5. 2
  6. 3
  7. 9
  8. 15
  9. 1
  10. 49
  11. 8
  12. 14
  13. 1
  14. 9
  15. 45
  16. 130
  17. 40
  18. 89
  19. 73/99
  20. 77.1
  21. 4
  22. 30
  23. 120
  24. 124
  25. 4
  26. 14
  27. 24
  28. 150
  29. 5
  30. 76
  31. 10
  32. 70
  33. 6
  34. 5
  35. 360
  36. 25
  37. 68630
  38. 6
  39. 180
  40. 11

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