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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 943 · 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.If 8 pencil boxes cost ₹408, how much do 16 pencil boxes cost (in ₹)?
  2. 2.A hall floor is 225 cm long and 180 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  3. 3.Two tanks hold 100 litres and 150 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  4. 4.Divide ₹399 between Ishaan and Zoya in the ratio 3 : 4. How much does Zoya get (in ₹)?
  5. 5.A hostel has enough food for 4 students for 16 days. How many days will the same food last for 2 students?
  6. 6.What is the smallest number you must add to 683 so that it divides exactly by 12?
  7. 7.Find the third proportional to 3 and 9 (that is, 3 : 9 = 9 : ?).
  8. 8.Which of these numbers divides exactly by 11? (a) 3960 (b) 2367 (c) 6416 (d) 4546
  9. 9.Find the LCM of 24 and 27.
  10. 10.8 painters can paint a school in 13 days. How many days would 4 painters take, working at the same speed?
  11. 11.How many factors does 86 have?
  12. 12.Rohan takes 40 seconds and Arjun 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. 13.101 − 27 ÷ 3 × 9 =
  14. 14.Which is closest to 102 + 597 + 801? (a) 1400 (b) 1600 (c) 1700 (d) 1500
  15. 15.What is 10% of 200?
  16. 16.Find the third proportional to 4 and 8 (that is, 4 : 8 = 8 : ?).
  17. 17.9 : 4 = 36 : ?
  18. 18.The ratio of boys to girls in a class is 3 : 8. There are 12 boys. How many girls are there?
  19. 19.If 8 kg of rice costs ₹464, how many kg can you buy for ₹870?
  20. 20.The ratio of boys to girls in a class is 1 : 2. There are 9 boys. How many girls are there?
  21. 21.Find the LCM of 16 and 18.
  22. 22.9 : 8 = 18 : ?
  23. 23.A hall floor is 135 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  24. 24.Divide ₹162 between Aarav and Kavya in the ratio 8 : 1. How much does Kavya get (in ₹)?
  25. 25.The HCF of two numbers is 8 and their LCM is 336. One of the numbers is 56. What is the other number?
  26. 26.Find the LCM of 12, 4 and 10.
  27. 27.35 − 40 ÷ 5 × 4 =
  28. 28.What is the smallest number you must add to 199 so that it divides exactly by 6?
  29. 29.108 ÷ 9 × 9 + 13 =
  30. 30.2 : 3 = 6 : ?
  31. 31.18 ÷ 2 × 2 + 19 =
  32. 32.Saanvi takes 90 seconds and Rahul takes 54 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?
  33. 33.10 : 5 = 30 : ?
  34. 34.If 9 kg of rice costs ₹207, how many kg can you buy for ₹46?
  35. 35.35 − 12 ÷ 6 × 6 =
  36. 36.2.59 + 2.3 =
  37. 37.1/2 + 2/4 =
  38. 38.30% of a number is 90. What is the number?
  39. 39.What is 15% of 80?
  40. 40.8/10 × 1/4 =

Answer key

  1. 816
  2. 20
  3. 50
  4. 228
  5. 32
  6. 1
  7. 27
  8. 3960
  9. 216
  10. 26
  11. 4
  12. 360
  13. 20
  14. 1500
  15. 20
  16. 16
  17. 16
  18. 32
  19. 15
  20. 18
  21. 144
  22. 16
  23. 6
  24. 18
  25. 48
  26. 60
  27. 3
  28. 5
  29. 121
  30. 9
  31. 37
  32. 270
  33. 15
  34. 2
  35. 23
  36. 4.89
  37. 1
  38. 300
  39. 12
  40. 1/5

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