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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 423 · 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.(10 + 5) × 4 − 24 =
  2. 2.Which is closest to 702 × 78? (Round each number first.) (a) 560000 (b) 112000 (c) 5600 (d) 56000
  3. 3.Divide ₹385 between Kabir and Isha in the ratio 1 : 6. How much does Kabir get (in ₹)?
  4. 4.Find the LCM of 4 and 5.
  5. 5.If 11 notebooks cost ₹374, how much do 14 notebooks cost (in ₹)?
  6. 6.Round 82.91 to one decimal place. =
  7. 7.The HCF of two numbers is 9 and their LCM is 324. One of the numbers is 81. What is the other number?
  8. 8.3/7 of 56 + 4 × 5 =
  9. 9.15% of a number is 69. What is the number?
  10. 10.5/6 × 8/11 =
  11. 11.The HCF of two numbers is 2 and their LCM is 36. One of the numbers is 18. What is the other number?
  12. 12.Three temple bells ring every 30, 9 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  13. 13.14 ÷ 2 × 9 + 12 =
  14. 14.Which is closest to 697 × 41? (Round each number first.) (a) 28000 (b) 56000 (c) 2800 (d) 280000
  15. 15.A hall floor is 100 cm long and 75 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  16. 16.Find the LCM of 13, 3 and 12.
  17. 17.38 + 6 × 12 − 22 =
  18. 18.30% of a number is 96. What is the number?
  19. 19.What is the smallest number you must take away from 625 so that it divides exactly by 8?
  20. 20.If 9 kg of rice costs ₹810, how many kg can you buy for ₹360?
  21. 21.Pooja takes 72 seconds and Farhan takes 30 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?
  22. 22.8.29 + 3.4 =
  23. 23.Find the HCF of 20 and 12.
  24. 24.Find the smallest number bigger than 10 that leaves a remainder of 2 when divided by 3, 10 or 6.
  25. 25.1/2 + 2/4 =
  26. 26.Find the HCF of 22 and 99.
  27. 27.Which is closest to 99 + 495 + 197? (a) 900 (b) 700 (c) 800 (d) 1000
  28. 28.Round 12.56 to one decimal place. =
  29. 29.A hall floor is 315 cm long and 135 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  30. 30.Find the LCM of 9 and 2.
  31. 31.50% of a number is 279. What is the number?
  32. 32.A car goes 200 km on 10 litres of petrol. How far can it go on 24 litres (in km)?
  33. 33.Find the LCM of 16 and 12.
  34. 34.Two tanks hold 350 litres and 200 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  35. 35.How many factors does 25 have?
  36. 36.Find the LCM of 14, 12 and 3.
  37. 37.Write 3/4 as a percent.
  38. 38.The ratio of boys to girls in a class is 9 : 7. There are 45 boys. How many girls are there?
  39. 39.Arjun scored 18 marks out of 25 in a test. What percentage did Arjun score?
  40. 40.18 ÷ 2 × 2 + 10 =

Answer key

  1. 36
  2. 56000
  3. 55
  4. 20
  5. 476
  6. 82.9
  7. 36
  8. 44
  9. 460
  10. 20/33
  11. 4
  12. 90
  13. 75
  14. 28000
  15. 12
  16. 156
  17. 88
  18. 320
  19. 1
  20. 4
  21. 360
  22. 11.69
  23. 4
  24. 32
  25. 1
  26. 11
  27. 800
  28. 12.6
  29. 21
  30. 18
  31. 558
  32. 480
  33. 48
  34. 50
  35. 3
  36. 84
  37. 75
  38. 35
  39. 72
  40. 28

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