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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 503 · 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 LCM of 12 and 42.
  2. 2.1.6 × 7 =
  3. 3.11 : 13 = 33 : ?
  4. 4.40 − 21 ÷ 7 × 7 =
  5. 5.(11 + 2) × 3 − 3 =
  6. 6.Find the third proportional to 2 and 6 (that is, 2 : 6 = 6 : ?).
  7. 7.Which of these numbers divides exactly by 4? (a) 2342 (b) 9685 (c) 6784 (d) 1711
  8. 8.8.37 + 9.2 =
  9. 9.Which of these numbers divides exactly by 6? (a) 2280 (b) 9627 (c) 3451 (d) 5519
  10. 10.Find the smallest number bigger than 15 that leaves a remainder of 3 when divided by 15, 6 or 10.
  11. 11.A hall floor is 75 cm long and 50 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  12. 12.Which is closest to 2993 ÷ 49? (a) 120 (b) 30 (c) 60 (d) 600
  13. 13.(8 + 7) × 2 − 15 =
  14. 14.42 ÷ 6 × 8 + 8 =
  15. 15.What is the smallest number you must take away from 715 so that it divides exactly by 7?
  16. 16.Find the third proportional to 9 and 18 (that is, 9 : 18 = 18 : ?).
  17. 17.How many factors does 68 have?
  18. 18.Two tanks hold 200 litres and 160 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  19. 19.A hostel has enough food for 9 students for 25 days. How many days will the same food last for 15 students?
  20. 20.A hostel has enough food for 2 students for 22 days. How many days will the same food last for 4 students?
  21. 21.If 3 erasers cost ₹102, how much do 18 erasers cost (in ₹)?
  22. 22.A hall floor is 250 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  23. 23.The ratio of boys to girls in a class is 8 : 1. There are 48 boys. How many girls are there?
  24. 24.Find the LCM of 8, 5 and 10.
  25. 25.1/10 + 4/6 =
  26. 26.Divide ₹132 between Manav and Saanvi in the ratio 8 : 3. How much does Saanvi get (in ₹)?
  27. 27.Find the HCF of 99 and 44.
  28. 28.47 + 10 × 8 − 25 =
  29. 29.2.47 + 4.7 =
  30. 30.Which is closest to 900 + 704 + 704? (a) 2500 (b) 2300 (c) 2200 (d) 2400
  31. 31.Three temple bells ring every 9, 6 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  32. 32.If 5 kg of rice costs ₹280, how many kg can you buy for ₹168?
  33. 33.A hostel has enough food for 3 students for 27 days. How many days will the same food last for 9 students?
  34. 34.If 12 bottles of juice cost ₹228, how much do 4 bottles of juice cost (in ₹)?
  35. 35.The ratio of boys to girls in a class is 6 : 5. There are 24 boys. How many girls are there?
  36. 36.If 6 pens cost ₹222, how much do 10 pens cost (in ₹)?
  37. 37.Divide ₹144 between Pooja and Sneha in the ratio 5 : 3. How much does Sneha get (in ₹)?
  38. 38.Find the third proportional to 2 and 10 (that is, 2 : 10 = 10 : ?).
  39. 39.Find the LCM of 13, 12 and 6.
  40. 40.Round 78.57 to one decimal place. =

Answer key

  1. 84
  2. 11.2
  3. 39
  4. 19
  5. 36
  6. 18
  7. 6784
  8. 17.57
  9. 2280
  10. 33
  11. 6
  12. 60
  13. 15
  14. 64
  15. 1
  16. 36
  17. 6
  18. 40
  19. 15
  20. 11
  21. 612
  22. 15
  23. 6
  24. 40
  25. 23/30
  26. 36
  27. 11
  28. 102
  29. 7.17
  30. 2300
  31. 90
  32. 3
  33. 9
  34. 76
  35. 20
  36. 370
  37. 54
  38. 50
  39. 156
  40. 78.6

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