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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 994 · 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 smallest number bigger than 15 that leaves a remainder of 7 when divided by 12, 8 or 15.
  2. 2.How many factors does 53 have?
  3. 3.Which is closest to 801 + 897 + 97? (a) 1900 (b) 2000 (c) 1700 (d) 1800
  4. 4.5 : 2 = 45 : ?
  5. 5.Three temple bells ring every 6, 10 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  6. 6.The ratio of boys to girls in a class is 1 : 4. There are 7 boys. How many girls are there?
  7. 7.Find the HCF of 27 and 6.
  8. 8.Two tanks hold 25 litres and 40 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  9. 9.What percent of 80 is 12?
  10. 10.Find the HCF of 24 and 108.
  11. 11.Zoya scored 12 marks out of 25 in a test. What percentage did Zoya score?
  12. 12.The HCF of two numbers is 3 and their LCM is 135. One of the numbers is 27. What is the other number?
  13. 13.What is the smallest number you must take away from 290 so that it divides exactly by 11?
  14. 14.A car goes 210 km on 10 litres of petrol. How far can it go on 36 litres (in km)?
  15. 15.Find the LCM of 2, 8 and 14.
  16. 16.A car goes 52 km on 4 litres of petrol. How far can it go on 9 litres (in km)?
  17. 17.(18 + 9) × 3 − 5 =
  18. 18.What is the smallest number you must add to 770 so that it divides exactly by 6?
  19. 19.Which is closest to 499 × 40? (Round each number first.) (a) 20000 (b) 40000 (c) 200000 (d) 2000
  20. 20.Round 16.09 to one decimal place. =
  21. 21.Find the LCM of 3 and 8.
  22. 22.The ratio of boys to girls in a class is 1 : 2. There are 6 boys. How many girls are there?
  23. 23.Divide ₹336 between Zoya and Saanvi in the ratio 7 : 9. How much does Saanvi get (in ₹)?
  24. 24.Divide ₹429 between Isha and Sneha in the ratio 7 : 4. How much does Isha get (in ₹)?
  25. 25.The HCF of two numbers is 6 and their LCM is 144. One of the numbers is 48. What is the other number?
  26. 26.Which is closest to 796 × 39? (Round each number first.) (a) 32000 (b) 320000 (c) 64000 (d) 3200
  27. 27.If 2 kg of rice costs ₹166, how many kg can you buy for ₹1162?
  28. 28.81 ÷ 9 × 8 + 3 =
  29. 29.What is the smallest number you must add to 902 so that it divides exactly by 3?
  30. 30.Which is closest to 898 × 79? (Round each number first.) (a) 7200 (b) 72000 (c) 144000 (d) 720000
  31. 31.What is the smallest number you must take away from 698 so that it divides exactly by 8?
  32. 32.8 : 12 = 40 : ?
  33. 33.Tara scored 2 marks out of 25 in a test. What percentage did Tara score?
  34. 34.Divide ₹162 between Arjun and Diya in the ratio 8 : 1. How much does Diya get (in ₹)?
  35. 35.Find the LCM of 8, 4 and 12.
  36. 36.3.54 + 5.4 =
  37. 37.2.7 × 2 =
  38. 38.Round 39.68 to one decimal place. =
  39. 39.The HCF of two numbers is 4 and their LCM is 140. One of the numbers is 20. What is the other number?
  40. 40.Round 82.29 to one decimal place. =

Answer key

  1. 127
  2. 2
  3. 1800
  4. 18
  5. 120
  6. 28
  7. 3
  8. 5
  9. 15
  10. 12
  11. 48
  12. 15
  13. 4
  14. 756
  15. 56
  16. 117
  17. 76
  18. 4
  19. 20000
  20. 16.1
  21. 24
  22. 12
  23. 189
  24. 273
  25. 18
  26. 32000
  27. 14
  28. 75
  29. 1
  30. 72000
  31. 2
  32. 60
  33. 8
  34. 18
  35. 24
  36. 8.94
  37. 5.4
  38. 39.7
  39. 28
  40. 82.3

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