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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 879 · 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.(7 + 17) × 6 − 13 =
  2. 2.Find the LCM of 6 and 10.
  3. 3.20% of a number is 24. What is the number?
  4. 4.A hall floor is 140 cm long and 80 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  5. 5.15.6 ÷ 2 =
  6. 6.Round 35883 to the nearest thousand.
  7. 7.(16 + 2) × 7 − 23 =
  8. 8.Round 79.33 to one decimal place. =
  9. 9.If 9 erasers cost ₹180, how much do 12 erasers cost (in ₹)?
  10. 10.Two tanks hold 90 litres and 240 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  11. 11.(13 + 8) × 6 − 6 =
  12. 12.8.56 + 5.6 =
  13. 13.Find the LCM of 6, 5 and 3.
  14. 14.75% of a number is 9. What is the number?
  15. 15.4/9 of 63 + 2 × 6 =
  16. 16.Find the LCM of 3, 12 and 11.
  17. 17.What is 9/10 of 140 kg?
  18. 18.Find the LCM of 10, 12 and 9.
  19. 19.3/9 + 3/4 =
  20. 20.The ratio of boys to girls in a class is 9 : 8. There are 45 boys. How many girls are there?
  21. 21.Three temple bells ring every 12, 8 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  22. 22.Find the HCF of 45 and 25.
  23. 23.Which is closest to 1194 ÷ 29? (a) 400 (b) 80 (c) 20 (d) 40
  24. 24.Divide ₹288 between Rahul and Rohan in the ratio 1 : 7. How much does Rahul get (in ₹)?
  25. 25.Karan takes 45 seconds and Vivaan 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?
  26. 26.Find the third proportional to 2 and 4 (that is, 2 : 4 = 4 : ?).
  27. 27.How many factors does 71 have?
  28. 28.How many factors does 90 have?
  29. 29.8/10 − 1/3 =
  30. 30.A hall floor is 280 cm long and 160 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  31. 31.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 5, 6 or 10.
  32. 32.How many factors does 49 have?
  33. 33.Three temple bells ring every 5, 4 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  34. 34.Find the HCF of 10 and 8.
  35. 35.A car goes 96 km on 6 litres of petrol. How far can it go on 37 litres (in km)?
  36. 36.(3 + 6) × 4 − 18 =
  37. 37.3 × (11 − 3) + 32 ÷ 4 =
  38. 38.Round 68.28 to one decimal place. =
  39. 39.Three temple bells ring every 6, 15 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  40. 40.1/2 − 2/10 =

Answer key

  1. 131
  2. 30
  3. 120
  4. 28
  5. 7.8
  6. 36000
  7. 103
  8. 79.3
  9. 240
  10. 30
  11. 120
  12. 14.16
  13. 30
  14. 12
  15. 40
  16. 132
  17. 126
  18. 180
  19. 13/12
  20. 40
  21. 120
  22. 5
  23. 40
  24. 36
  25. 720
  26. 8
  27. 2
  28. 12
  29. 7/15
  30. 28
  31. 31
  32. 3
  33. 120
  34. 2
  35. 592
  36. 18
  37. 32
  38. 68.3
  39. 60
  40. 3/10

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