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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 302 · 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 12 + 8 × 4 =
  2. 2.How many factors does 16 have?
  3. 3.71.2 ÷ 8 =
  4. 4.12 ÷ 3 × 3 + 28 =
  5. 5.Divide ₹176 between Ishaan and Meera in the ratio 8 : 3. How much does Meera get (in ₹)?
  6. 6.3/5 − 1/7 =
  7. 7.Find the LCM of 2, 11 and 4.
  8. 8.What percent of 500 is 425?
  9. 9.What percent of 400 is 364?
  10. 10.What percent of 500 is 210?
  11. 11.What is the smallest number you must take away from 884 so that it divides exactly by 3?
  12. 12.54.4 ÷ 8 =
  13. 13.If 4 pencil boxes cost ₹72, how much do 20 pencil boxes cost (in ₹)?
  14. 14.A hall floor is 160 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  15. 15.Which is closest to 704 × 18? (Round each number first.) (a) 14000 (b) 140000 (c) 28000 (d) 1400
  16. 16.If 7 cricket balls cost ₹154, how much do 6 cricket balls cost (in ₹)?
  17. 17.The ratio of boys to girls in a class is 5 : 8. There are 25 boys. How many girls are there?
  18. 18.Round 98990 to the nearest thousand.
  19. 19.The HCF of two numbers is 8 and their LCM is 80. One of the numbers is 40. What is the other number?
  20. 20.If 9 kg of rice costs ₹603, how many kg can you buy for ₹134?
  21. 21.Rohan takes 72 seconds and Kavya takes 30 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?
  22. 22.The HCF of two numbers is 4 and their LCM is 180. One of the numbers is 36. What is the other number?
  23. 23.If 4 cricket balls cost ₹156, how much do 15 cricket balls cost (in ₹)?
  24. 24.8.1 × 4 =
  25. 25.14.2 ÷ 2 =
  26. 26.(18 + 6) × 6 − 21 =
  27. 27.Find the third proportional to 9 and 36 (that is, 9 : 36 = 36 : ?).
  28. 28.What is the smallest number you must take away from 255 so that it divides exactly by 8?
  29. 29.The HCF of two numbers is 8 and their LCM is 448. One of the numbers is 56. What is the other number?
  30. 30.A car goes 100 km on 5 litres of petrol. How far can it go on 21 litres (in km)?
  31. 31.Find the LCM of 9 and 15.
  32. 32.Find the third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
  33. 33.Two tanks hold 60 litres and 105 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  34. 34.If 11 cricket balls cost ₹484, how much do 17 cricket balls cost (in ₹)?
  35. 35.The ratio of boys to girls in a class is 9 : 7. There are 54 boys. How many girls are there?
  36. 36.Which is closest to 396 × 29? (Round each number first.) (a) 24000 (b) 12000 (c) 120000 (d) 1200
  37. 37.Round 75.57 to one decimal place. =
  38. 38.A car goes 60 km on 6 litres of petrol. How far can it go on 24 litres (in km)?
  39. 39.2/5 − 3/10 =
  40. 40.What is 1/5 of 10 litres?

Answer key

  1. 38
  2. 5
  3. 8.9
  4. 40
  5. 48
  6. 16/35
  7. 44
  8. 85
  9. 91
  10. 42
  11. 2
  12. 6.8
  13. 360
  14. 24
  15. 14000
  16. 132
  17. 40
  18. 99000
  19. 16
  20. 2
  21. 360
  22. 20
  23. 585
  24. 32.4
  25. 7.1
  26. 123
  27. 144
  28. 7
  29. 64
  30. 420
  31. 45
  32. 32
  33. 15
  34. 748
  35. 42
  36. 12000
  37. 75.6
  38. 240
  39. 1/10
  40. 2

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