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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 794 · 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.If 8 cricket balls cost ₹80, how much do 15 cricket balls cost (in ₹)?
  2. 2.The HCF of two numbers is 8 and their LCM is 280. One of the numbers is 56. What is the other number?
  3. 3.51 − 32 ÷ 4 × 3 =
  4. 4.Find the third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
  5. 5.Divide ₹649 between Rahul and Priya in the ratio 6 : 5. How much does Rahul get (in ₹)?
  6. 6.A car goes 132 km on 11 litres of petrol. How far can it go on 24 litres (in km)?
  7. 7.2/4 − 2/7 =
  8. 8.Which is closest to 597 × 39? (Round each number first.) (a) 24000 (b) 48000 (c) 2400 (d) 240000
  9. 9.Round 74029 to the nearest ten.
  10. 10.The HCF of two numbers is 2 and their LCM is 112. One of the numbers is 16. What is the other number?
  11. 11.7.5 × 5 =
  12. 12.3 painters can paint a school in 7 days. How many days would 7 painters take, working at the same speed?
  13. 13.If 3 pencil boxes cost ₹132, how much do 17 pencil boxes cost (in ₹)?
  14. 14.Three temple bells ring every 10, 5 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  15. 15.11 : 5 = 22 : ?
  16. 16.Which of these numbers divides exactly by 11? (a) 9011 (b) 1130 (c) 9670 (d) 9460
  17. 17.Find the HCF of 45 and 81.
  18. 18.The HCF of two numbers is 4 and their LCM is 180. One of the numbers is 20. What is the other number?
  19. 19.Rohan takes 48 seconds and Diya 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?
  20. 20.Find the HCF of 12 and 9.
  21. 21.Pooja scored 21 marks out of 25 in a test. What percentage did Pooja score?
  22. 22.Divide ₹450 between Sneha and Vivaan in the ratio 3 : 7. How much does Vivaan get (in ₹)?
  23. 23.The HCF of two numbers is 7 and their LCM is 245. One of the numbers is 49. What is the other number?
  24. 24.Round 8562 to the nearest ten.
  25. 25.What is 3/4 of 8 litres?
  26. 26.3 × (29 − 22) + 21 ÷ 7 =
  27. 27.Which is closest to 197 × 61? (Round each number first.) (a) 1200 (b) 24000 (c) 120000 (d) 12000
  28. 28.Find the LCM of 12, 8 and 9.
  29. 29.(13 + 12) × 3 − 14 =
  30. 30.2 : 13 = 12 : ?
  31. 31.What is 15% of 120?
  32. 32.How many factors does 63 have?
  33. 33.The ratio of boys to girls in a class is 5 : 3. There are 20 boys. How many girls are there?
  34. 34.(10 + 11) × 9 − 11 =
  35. 35.What is 150% of 418?
  36. 36.16 ÷ 5 =
  37. 37.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?
  38. 38.How many factors does 28 have?
  39. 39.The ratio of boys to girls in a class is 1 : 6. There are 10 boys. How many girls are there?
  40. 40.Round 53.22 to one decimal place. =

Answer key

  1. 150
  2. 40
  3. 27
  4. 32
  5. 354
  6. 288
  7. 3/14
  8. 24000
  9. 74030
  10. 14
  11. 37.5
  12. 3
  13. 748
  14. 90
  15. 10
  16. 9460
  17. 9
  18. 36
  19. 240
  20. 3
  21. 84
  22. 315
  23. 35
  24. 8560
  25. 6
  26. 24
  27. 12000
  28. 72
  29. 61
  30. 78
  31. 18
  32. 6
  33. 12
  34. 178
  35. 627
  36. 3.2
  37. 28
  38. 6
  39. 60
  40. 53.2

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