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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 279 · 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.The HCF of two numbers is 8 and their LCM is 192. One of the numbers is 24. What is the other number?
  2. 2.What is 3/4 of ₹48?
  3. 3.If 11 pens cost ₹143, how much do 18 pens cost (in ₹)?
  4. 4.If 5 notebooks cost ₹155, how much do 11 notebooks cost (in ₹)?
  5. 5.Two tanks hold 225 litres and 360 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  6. 6.The HCF of two numbers is 9 and their LCM is 108. One of the numbers is 27. What is the other number?
  7. 7.A hostel has enough food for 11 students for 9 days. How many days will the same food last for 3 students?
  8. 8.What is the smallest number you must add to 954 so that it divides exactly by 12?
  9. 9.If 8 kg of rice costs ₹376, how many kg can you buy for ₹235?
  10. 10.If 7 kg of rice costs ₹161, how many kg can you buy for ₹184?
  11. 11.Find the LCM of 8 and 18.
  12. 12.Kavya takes 40 seconds and Nisha 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?
  13. 13.12 ÷ 6 × 4 + 14 =
  14. 14.Find the LCM of 10 and 18.
  15. 15.The ratio of boys to girls in a class is 1 : 9. There are 7 boys. How many girls are there?
  16. 16.Find the LCM of 6, 9 and 10.
  17. 17.Find the HCF of 60 and 48.
  18. 18.Which of these numbers divides exactly by 6? (a) 8019 (b) 2808 (c) 2517 (d) 6451
  19. 19.Find the LCM of 12, 8 and 4.
  20. 20.21 ÷ 7 × 3 + 29 =
  21. 21.Find the third proportional to 8 and 16 (that is, 8 : 16 = 16 : ?).
  22. 22.A hall floor is 360 cm long and 225 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  23. 23.Which of these numbers divides exactly by 4? (a) 2936 (b) 5139 (c) 5281 (d) 1206
  24. 24.What is the smallest number you must add to 376 so that it divides exactly by 12?
  25. 25.What is the smallest number you must add to 554 so that it divides exactly by 13?
  26. 26.Round 27800 to the nearest thousand.
  27. 27.If 9 bottles of juice cost ₹459, how much do 18 bottles of juice cost (in ₹)?
  28. 28.What is 1/3 of 69 students?
  29. 29.Round 73.67 to one decimal place. =
  30. 30.What percent of 80 is 16?
  31. 31.Find the LCM of 18 and 14.
  32. 32.4 × (11 − 9) + 22 ÷ 2 =
  33. 33.Which of these numbers divides exactly by 3? (a) 2501 (b) 1389 (c) 4364 (d) 1592
  34. 34.23 + 5 × 4 − 15 =
  35. 35.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 3, 9 or 12.
  36. 36.Round 92.43 to one decimal place. =
  37. 37.4 × (27 − 18) + 81 ÷ 9 =
  38. 38.2/7 + 2/3 =
  39. 39.Write 1/2 as a percent.
  40. 40.Two tanks hold 400 litres and 150 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?

Answer key

  1. 64
  2. 36
  3. 234
  4. 341
  5. 45
  6. 36
  7. 33
  8. 6
  9. 5
  10. 8
  11. 72
  12. 360
  13. 22
  14. 90
  15. 63
  16. 90
  17. 12
  18. 2808
  19. 24
  20. 38
  21. 32
  22. 40
  23. 2936
  24. 8
  25. 5
  26. 28000
  27. 918
  28. 23
  29. 73.7
  30. 20
  31. 126
  32. 19
  33. 1389
  34. 28
  35. 37
  36. 92.4
  37. 45
  38. 20/21
  39. 50
  40. 50

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