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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 851 · 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.Round 42.69 to one decimal place. =
  2. 2.Which is closest to 3207 ÷ 41? (a) 800 (b) 40 (c) 160 (d) 80
  3. 3.Which is closest to 1207 ÷ 21? (a) 120 (b) 30 (c) 600 (d) 60
  4. 4.Round 77.82 to one decimal place. =
  5. 5.A car goes 156 km on 12 litres of petrol. How far can it go on 6 litres (in km)?
  6. 6.If 7 kg of rice costs ₹140, how many kg can you buy for ₹300?
  7. 7.Which is closest to 3003 ÷ 51? (a) 600 (b) 120 (c) 30 (d) 60
  8. 8.4.4 × 7 =
  9. 9.What is 150% of 90?
  10. 10.Find the HCF of 21 and 12.
  11. 11.What is 1/4 of ₹48?
  12. 12.Divide ₹224 between Vivaan and Rahul in the ratio 5 : 9. How much does Rahul get (in ₹)?
  13. 13.The ratio of boys to girls in a class is 5 : 3. There are 40 boys. How many girls are there?
  14. 14.A hostel has enough food for 2 students for 20 days. How many days will the same food last for 8 students?
  15. 15.How many factors does 62 have?
  16. 16.Which of these numbers divides exactly by 9? (a) 6409 (b) 3195 (c) 7168 (d) 3310
  17. 17.Two tanks hold 90 litres and 80 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  18. 18.Round 14440 to the nearest hundred.
  19. 19.Dev takes 45 seconds and Saanvi takes 50 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.Which is closest to 303 + 701 + 297? (a) 1400 (b) 1500 (c) 1200 (d) 1300
  21. 21.23 + 2 × 3 − 8 =
  22. 22.1/3 of 27 + 3 × 7 =
  23. 23.Find the smallest number bigger than 12 that leaves a remainder of 3 when divided by 6, 12 or 8.
  24. 24.18 − 12 ÷ 4 × 2 =
  25. 25.Which of these numbers divides exactly by 6? (a) 1474 (b) 2372 (c) 5887 (d) 7206
  26. 26.Find the third proportional to 7 and 28 (that is, 7 : 28 = 28 : ?).
  27. 27.What is 20% of 90?
  28. 28.Find the LCM of 27 and 15.
  29. 29.Divide ₹627 between Kavya and Tara in the ratio 4 : 7. How much does Tara get (in ₹)?
  30. 30.Find the third proportional to 5 and 20 (that is, 5 : 20 = 20 : ?).
  31. 31.Sneha takes 75 seconds and Rohan takes 90 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?
  32. 32.Find the third proportional to 3 and 9 (that is, 3 : 9 = 9 : ?).
  33. 33.Find the LCM of 45 and 35.
  34. 34.The HCF of two numbers is 3 and their LCM is 60. One of the numbers is 15. What is the other number?
  35. 35.Three temple bells ring every 8, 9 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  36. 36.How many factors does 43 have?
  37. 37.A hall floor is 60 cm long and 40 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  38. 38.Round 55946 to the nearest thousand.
  39. 39.4 × (28 − 24) + 49 ÷ 7 =
  40. 40.Divide ₹186 between Nisha and Dev in the ratio 1 : 5. How much does Dev get (in ₹)?

Answer key

  1. 42.7
  2. 80
  3. 60
  4. 77.8
  5. 78
  6. 15
  7. 60
  8. 30.8
  9. 135
  10. 3
  11. 12
  12. 144
  13. 24
  14. 5
  15. 4
  16. 3195
  17. 10
  18. 14400
  19. 450
  20. 1300
  21. 21
  22. 30
  23. 27
  24. 12
  25. 7206
  26. 112
  27. 18
  28. 135
  29. 399
  30. 80
  31. 450
  32. 27
  33. 315
  34. 12
  35. 72
  36. 2
  37. 6
  38. 56000
  39. 23
  40. 155

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