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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 339 · 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 3 and their LCM is 54. One of the numbers is 6. What is the other number?
  2. 2.Rohan takes 45 seconds and Ananya 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?
  3. 3.Which of these numbers divides exactly by 8? (a) 6750 (b) 7936 (c) 8791 (d) 3559
  4. 4.What is 120% of 445?
  5. 5.Find the HCF of 63 and 18.
  6. 6.What is 20% of 435?
  7. 7.If 9 kg of rice costs ₹459, how many kg can you buy for ₹714?
  8. 8.47 + 2 × 10 − 4 =
  9. 9.Divide ₹105 between Dev and Karan in the ratio 2 : 1. How much does Dev get (in ₹)?
  10. 10.Which of these numbers divides exactly by 3? (a) 3011 (b) 2057 (c) 3899 (d) 3141
  11. 11.Find the LCM of 54 and 30.
  12. 12.Saanvi scored 28 marks out of 80 in a test. What percentage did Saanvi score?
  13. 13.A hall floor is 350 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  14. 14.A car goes 40 km on 4 litres of petrol. How far can it go on 3 litres (in km)?
  15. 15.4.8 × 8 =
  16. 16.35 + 11 × 11 − 18 =
  17. 17.Find the HCF of 120 and 75.
  18. 18.Find the third proportional to 9 and 45 (that is, 9 : 45 = 45 : ?).
  19. 19.Find the HCF of 63 and 72.
  20. 20.Write 1/5 as a percent.
  21. 21.22 ÷ 2 × 8 + 11 =
  22. 22.Rahul takes 48 seconds and Rohan 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?
  23. 23.Find the LCM of 20 and 45.
  24. 24.A car goes 288 km on 12 litres of petrol. How far can it go on 31 litres (in km)?
  25. 25.5 painters can paint a school in 19 days. How many days would 19 painters take, working at the same speed?
  26. 26.Find the LCM of 3 and 7.
  27. 27.7/12 + 4/6 =
  28. 28.If 12 pens cost ₹84, how much do 2 pens cost (in ₹)?
  29. 29.Find the HCF of 4 and 18.
  30. 30.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 4, 10 or 5.
  31. 31.7/10 × 2/4 =
  32. 32.Two tanks hold 180 litres and 405 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  33. 33.5.53 + 2.8 =
  34. 34.Find the LCM of 3, 12 and 15.
  35. 35.Find the LCM of 5, 13 and 10.
  36. 36.(13 + 4) × 3 − 30 =
  37. 37.7.98 + 3.6 =
  38. 38.Find the LCM of 4, 6 and 13.
  39. 39.If 2 pens cost ₹64, how much do 6 pens cost (in ₹)?
  40. 40.The ratio of boys to girls in a class is 4 : 3. There are 24 boys. How many girls are there?

Answer key

  1. 27
  2. 720
  3. 7936
  4. 534
  5. 9
  6. 87
  7. 14
  8. 63
  9. 70
  10. 3141
  11. 270
  12. 35
  13. 14
  14. 30
  15. 38.4
  16. 138
  17. 15
  18. 225
  19. 9
  20. 20
  21. 99
  22. 240
  23. 180
  24. 744
  25. 5
  26. 21
  27. 5/4
  28. 14
  29. 2
  30. 21
  31. 7/20
  32. 45
  33. 8.33
  34. 60
  35. 130
  36. 21
  37. 11.58
  38. 156
  39. 192
  40. 18

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