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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 356 · 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.The HCF of two numbers is 7 and their LCM is 280. One of the numbers is 35. What is the other number?
  2. 2.15% of a number is 54. What is the number?
  3. 3.88 ÷ 8 × 3 + 19 =
  4. 4.7/10 − 4/6 =
  5. 5.A car goes 264 km on 11 litres of petrol. How far can it go on 22 litres (in km)?
  6. 6.Write 7/10 as a percent.
  7. 7.4/5 + 4/8 =
  8. 8.Three temple bells ring every 5, 6 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  9. 9.Divide ₹110 between Farhan and Rahul in the ratio 4 : 7. How much does Farhan get (in ₹)?
  10. 10.Find the third proportional to 8 and 24 (that is, 8 : 24 = 24 : ?).
  11. 11.If 8 kg of rice costs ₹320, how many kg can you buy for ₹80?
  12. 12.4.07 + 2.6 =
  13. 13.8 : 3 = 56 : ?
  14. 14.Which is closest to 1397 ÷ 19? (a) 140 (b) 70 (c) 35 (d) 700
  15. 15.A hall floor is 200 cm long and 80 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  16. 16.5/8 of 56 + 9 × 3 =
  17. 17.The HCF of two numbers is 3 and their LCM is 63. One of the numbers is 9. What is the other number?
  18. 18.How many factors does 99 have?
  19. 19.Find the smallest number bigger than 10 that leaves a remainder of 2 when divided by 10, 3 or 5.
  20. 20.Three temple bells ring every 24, 9 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  21. 21.Round 63.47 to one decimal place. =
  22. 22.Which is closest to 296 × 30? (Round each number first.) (a) 9000 (b) 90000 (c) 18000 (d) 900
  23. 23.1/5 + 1/7 =
  24. 24.Find the HCF of 112 and 126.
  25. 25.Find the LCM of 14 and 6.
  26. 26.1/2 + 1/7 =
  27. 27.5/9 × 1/2 =
  28. 28.24 + 9 × 8 − 7 =
  29. 29.Write 1/20 as a percent.
  30. 30.Three temple bells ring every 24, 30 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  31. 31.Which is closest to 495 + 898 + 895? (a) 2400 (b) 2200 (c) 2300 (d) 2500
  32. 32.Round 98.26 to one decimal place. =
  33. 33.The ratio of boys to girls in a class is 9 : 1. There are 72 boys. How many girls are there?
  34. 34.If 7 erasers cost ₹56, how much do 5 erasers cost (in ₹)?
  35. 35.Two tanks hold 80 litres and 90 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  36. 36.24 − 15 ÷ 3 × 3 =
  37. 37.A car goes 90 km on 5 litres of petrol. How far can it go on 3 litres (in km)?
  38. 38.49 − 72 ÷ 9 × 2 =
  39. 39.A hall floor is 175 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  40. 40.27 − 6 ÷ 3 × 5 =

Answer key

  1. 56
  2. 360
  3. 52
  4. 1/30
  5. 528
  6. 70
  7. 13/10
  8. 90
  9. 40
  10. 72
  11. 2
  12. 6.67
  13. 21
  14. 70
  15. 10
  16. 62
  17. 21
  18. 6
  19. 32
  20. 72
  21. 63.5
  22. 9000
  23. 12/35
  24. 14
  25. 42
  26. 9/14
  27. 5/18
  28. 89
  29. 5
  30. 120
  31. 2300
  32. 98.3
  33. 8
  34. 40
  35. 10
  36. 9
  37. 54
  38. 33
  39. 28
  40. 17

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