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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 666 · 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. 1.30% of a number is 18. What is the number?
  2. 2.6 : 5 = 18 : ?
  3. 3.Which of these numbers divides exactly by 8? (a) 9099 (b) 4488 (c) 5975 (d) 8593
  4. 4.If 4 bottles of juice cost ₹40, how much do 19 bottles of juice cost (in ₹)?
  5. 5.What is the smallest number you must take away from 240 so that it divides exactly by 7?
  6. 6.Which of these numbers divides exactly by 6? (a) 6223 (b) 2479 (c) 2313 (d) 7404
  7. 7.3.6 ÷ 2 =
  8. 8.If 4 kg of rice costs ₹356, how many kg can you buy for ₹623?
  9. 9.Three temple bells ring every 12, 18 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  10. 10.8.78 + 5.3 =
  11. 11.Find the LCM of 3, 13 and 12.
  12. 12.What is the smallest number you must take away from 800 so that it divides exactly by 13?
  13. 13.Ananya takes 30 seconds and Aarav 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?
  14. 14.40 + 3 × 11 − 5 =
  15. 15.What is the smallest number you must add to 739 so that it divides exactly by 13?
  16. 16.Two tanks hold 10 litres and 25 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  17. 17.Find the LCM of 36 and 42.
  18. 18.2/9 of 90 + 4 × 6 =
  19. 19.The HCF of two numbers is 5 and their LCM is 200. One of the numbers is 25. What is the other number?
  20. 20.Two tanks hold 75 litres and 30 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  21. 21.Find the LCM of 4 and 7.
  22. 22.Kabir scored 44 marks out of 80 in a test. What percentage did Kabir score?
  23. 23.The ratio of boys to girls in a class is 4 : 5. There are 12 boys. How many girls are there?
  24. 24.A hall floor is 200 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  25. 25.(5 + 19) × 5 − 26 =
  26. 26.Find the LCM of 14, 12 and 4.
  27. 27.Find the HCF of 15 and 27.
  28. 28.What is 4/5 of 30 litres?
  29. 29.Two tanks hold 180 litres and 135 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  30. 30.Find the HCF of 39 and 91.
  31. 31.The ratio of boys to girls in a class is 8 : 9. There are 48 boys. How many girls are there?
  32. 32.9.3 × 5 =
  33. 33.Dev takes 72 seconds and Arjun 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?
  34. 34.What is 1/3 of 75 litres?
  35. 35.The HCF of two numbers is 2 and their LCM is 48. One of the numbers is 6. What is the other number?
  36. 36.5 painters can paint a school in 15 days. How many days would 3 painters take, working at the same speed?
  37. 37.12 + 8 × 7 − 2 =
  38. 38.Find the LCM of 28 and 24.
  39. 39.What percent of 500 is 50?
  40. 40.46 + 11 × 10 − 3 =

Answer key

  1. 60
  2. 15
  3. 4488
  4. 190
  5. 2
  6. 7404
  7. 1.8
  8. 7
  9. 36
  10. 14.08
  11. 156
  12. 7
  13. 240
  14. 68
  15. 2
  16. 5
  17. 252
  18. 44
  19. 40
  20. 15
  21. 28
  22. 55
  23. 15
  24. 12
  25. 94
  26. 84
  27. 3
  28. 24
  29. 45
  30. 13
  31. 54
  32. 46.5
  33. 720
  34. 25
  35. 16
  36. 25
  37. 66
  38. 168
  39. 10
  40. 153

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