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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 916 · 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. 1.4.2 ÷ 3 =
  2. 2.2/7 + 5/6 =
  3. 3.Write 1/2 as a percent.
  4. 4.What is 25% of 84?
  5. 5.Find the third proportional to 5 and 15 (that is, 5 : 15 = 15 : ?).
  6. 6.What is 1/4 of 60 students?
  7. 7.Which of these numbers divides exactly by 3? (a) 3221 (b) 5994 (c) 1381 (d) 4081
  8. 8.Two tanks hold 135 litres and 120 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  9. 9.Find the LCM of 4, 6 and 5.
  10. 10.If 9 pencil boxes cost ₹135, how much do 16 pencil boxes cost (in ₹)?
  11. 11.12% of a number is 15. What is the number?
  12. 12.Which of these numbers divides exactly by 11? (a) 4815 (b) 2784 (c) 3359 (d) 6776
  13. 13.Round 6706 to the nearest ten.
  14. 14.12 painters can paint a school in 19 days. How many days would 4 painters take, working at the same speed?
  15. 15.Find the third proportional to 4 and 12 (that is, 4 : 12 = 12 : ?).
  16. 16.Find the third proportional to 7 and 14 (that is, 7 : 14 = 14 : ?).
  17. 17.If 7 kg of rice costs ₹469, how many kg can you buy for ₹402?
  18. 18.(19 + 3) × 2 − 21 =
  19. 19.5.2 × 7 =
  20. 20.Find the LCM of 7, 12 and 3.
  21. 21.The HCF of two numbers is 7 and their LCM is 42. One of the numbers is 21. What is the other number?
  22. 22.The HCF of two numbers is 5 and their LCM is 175. One of the numbers is 35. What is the other number?
  23. 23.Two tanks hold 20 litres and 25 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  24. 24.4/7 − 1/5 =
  25. 25.Diya takes 80 seconds and Pooja 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?
  26. 26.21 + 7 × 2 − 8 =
  27. 27.Divide ₹720 between Isha and Aarav in the ratio 8 : 7. How much does Aarav get (in ₹)?
  28. 28.Find the LCM of 3, 12 and 13.
  29. 29.Round 35503 to the nearest ten.
  30. 30.Find the LCM of 32 and 12.
  31. 31.What is the smallest number you must add to 100 so that it divides exactly by 11?
  32. 32.Write 1/20 as a percent.
  33. 33.If 3 cricket balls cost ₹48, how much do 8 cricket balls cost (in ₹)?
  34. 34.17.1 ÷ 9 =
  35. 35.Kavya takes 50 seconds and Dev takes 80 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.A car goes 184 km on 8 litres of petrol. How far can it go on 29 litres (in km)?
  37. 37.Isha takes 75 seconds and Zoya 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?
  38. 38.Which is closest to 1595 ÷ 19? (a) 800 (b) 80 (c) 160 (d) 40
  39. 39.The ratio of boys to girls in a class is 8 : 3. There are 40 boys. How many girls are there?
  40. 40.Which is closest to 3199 ÷ 41? (a) 40 (b) 80 (c) 160 (d) 800

Answer key

  1. 1.4
  2. 47/42
  3. 50
  4. 21
  5. 45
  6. 15
  7. 5994
  8. 15
  9. 60
  10. 240
  11. 125
  12. 6776
  13. 6710
  14. 57
  15. 36
  16. 28
  17. 6
  18. 23
  19. 36.4
  20. 84
  21. 14
  22. 25
  23. 5
  24. 13/35
  25. 240
  26. 27
  27. 336
  28. 156
  29. 35500
  30. 96
  31. 10
  32. 5
  33. 128
  34. 1.9
  35. 400
  36. 667
  37. 150
  38. 80
  39. 15
  40. 80

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