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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 616 · 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.A hall floor is 210 cm long and 180 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  2. 2.What is the smallest number you must add to 131 so that it divides exactly by 6?
  3. 3.9.01 + 6.6 =
  4. 4.What is the smallest number you must take away from 755 so that it divides exactly by 11?
  5. 5.Arjun takes 36 seconds and Aditya 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?
  6. 6.56 − 40 ÷ 8 × 9 =
  7. 7.A car goes 44 km on 4 litres of petrol. How far can it go on 10 litres (in km)?
  8. 8.The ratio of boys to girls in a class is 3 : 2. There are 6 boys. How many girls are there?
  9. 9.1.8 × 7 =
  10. 10.Find the LCM of 3, 2 and 7.
  11. 11.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 10, 3 or 12.
  12. 12.3/7 of 77 + 6 × 9 =
  13. 13.Find the LCM of 32 and 12.
  14. 14.Find the LCM of 25 and 30.
  15. 15.Find the LCM of 3, 2 and 9.
  16. 16.What is the smallest number you must add to 668 so that it divides exactly by 12?
  17. 17.32 ÷ 4 × 4 + 7 =
  18. 18.If 9 kg of rice costs ₹198, how many kg can you buy for ₹286?
  19. 19.How many factors does 60 have?
  20. 20.Find the HCF of 30 and 45.
  21. 21.Find the LCM of 27 and 6.
  22. 22.Find the HCF of 25 and 30.
  23. 23.Find the HCF of 30 and 135.
  24. 24.Which is closest to 99 + 496 + 196? (a) 700 (b) 800 (c) 900 (d) 1000
  25. 25.If 3 kg of rice costs ₹171, how many kg can you buy for ₹684?
  26. 26.If 8 kg of rice costs ₹248, how many kg can you buy for ₹124?
  27. 27.4 : 9 = 24 : ?
  28. 28.If 10 pens cost ₹100, how much do 4 pens cost (in ₹)?
  29. 29.Which is closest to 1005 ÷ 51? (a) 10 (b) 40 (c) 200 (d) 20
  30. 30.Three temple bells ring every 8, 5 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  31. 31.7.5 ÷ 5 =
  32. 32.Which is closest to 204 × 18? (Round each number first.) (a) 40000 (b) 400 (c) 8000 (d) 4000
  33. 33.What percent of 40 is 20?
  34. 34.What is the smallest number you must take away from 913 so that it divides exactly by 6?
  35. 35.The HCF of two numbers is 6 and their LCM is 90. One of the numbers is 30. What is the other number?
  36. 36.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 12, 5 or 8.
  37. 37.Three temple bells ring every 30, 15 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  38. 38.Find the LCM of 11, 14 and 7.
  39. 39.49.6 ÷ 8 =
  40. 40.A hall floor is 210 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?

Answer key

  1. 42
  2. 1
  3. 15.61
  4. 7
  5. 180
  6. 11
  7. 110
  8. 4
  9. 12.6
  10. 42
  11. 61
  12. 87
  13. 96
  14. 150
  15. 18
  16. 4
  17. 39
  18. 13
  19. 12
  20. 15
  21. 54
  22. 5
  23. 15
  24. 800
  25. 12
  26. 4
  27. 54
  28. 40
  29. 20
  30. 120
  31. 1.5
  32. 4000
  33. 50
  34. 1
  35. 18
  36. 121
  37. 90
  38. 154
  39. 6.2
  40. 14

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