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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 749 · 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. 1.48 + 5 × 12 − 17 =
  2. 2.6.5 × 2 =
  3. 3.A car goes 187 km on 11 litres of petrol. How far can it go on 21 litres (in km)?
  4. 4.Round 52.22 to one decimal place. =
  5. 5.Two tanks hold 45 litres and 35 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  6. 6.Three temple bells ring every 20, 5 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  7. 7.Which is closest to 803 × 28? (Round each number first.) (a) 24000 (b) 2400 (c) 48000 (d) 240000
  8. 8.How many factors does 37 have?
  9. 9.Which of these numbers divides exactly by 9? (a) 3210 (b) 8010 (c) 1705 (d) 4415
  10. 10.15 + 8 × 10 − 4 =
  11. 11.12 + 6 × 10 − 2 =
  12. 12.Divide ₹117 between Vivaan and Diya in the ratio 5 : 4. How much does Diya get (in ₹)?
  13. 13.Round 31632 to the nearest thousand.
  14. 14.(4 + 2) × 3 − 12 =
  15. 15.Find the LCM of 6, 14 and 7.
  16. 16.What is 30% of 200?
  17. 17.50% of a number is 180. What is the number?
  18. 18.Which is closest to 302 × 38? (Round each number first.) (a) 24000 (b) 120000 (c) 12000 (d) 1200
  19. 19.1/2 + 7/11 =
  20. 20.Divide ₹528 between Karan and Diya in the ratio 3 : 8. How much does Karan get (in ₹)?
  21. 21.Two tanks hold 15 litres and 35 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  22. 22.Find the LCM of 15, 10 and 8.
  23. 23.A hostel has enough food for 7 students for 16 days. How many days will the same food last for 16 students?
  24. 24.33 ÷ 3 × 7 + 19 =
  25. 25.Find the smallest number bigger than 8 that leaves a remainder of 2 when divided by 8, 4 or 3.
  26. 26.A hostel has enough food for 8 students for 25 days. How many days will the same food last for 10 students?
  27. 27.5 : 10 = 40 : ?
  28. 28.Find the LCM of 3 and 4.
  29. 29.A hostel has enough food for 11 students for 14 days. How many days will the same food last for 14 students?
  30. 30.7/8 × 3/5 =
  31. 31.Which is closest to 1192 ÷ 19? (a) 600 (b) 120 (c) 60 (d) 30
  32. 32.A hostel has enough food for 9 students for 14 days. How many days will the same food last for 6 students?
  33. 33.Find the third proportional to 9 and 18 (that is, 9 : 18 = 18 : ?).
  34. 34.Find the third proportional to 6 and 18 (that is, 6 : 18 = 18 : ?).
  35. 35.Find the third proportional to 5 and 10 (that is, 5 : 10 = 10 : ?).
  36. 36.The ratio of boys to girls in a class is 1 : 2. There are 10 boys. How many girls are there?
  37. 37.Which is closest to 797 + 299 + 296? (a) 1400 (b) 1300 (c) 1500 (d) 1600
  38. 38.Write 2/5 as a percent.
  39. 39.Round 79.44 to one decimal place. =
  40. 40.5 : 2 = 15 : ?

Answer key

  1. 91
  2. 13
  3. 357
  4. 52.2
  5. 5
  6. 60
  7. 24000
  8. 2
  9. 8010
  10. 91
  11. 70
  12. 52
  13. 32000
  14. 6
  15. 42
  16. 60
  17. 360
  18. 12000
  19. 25/22
  20. 144
  21. 5
  22. 120
  23. 7
  24. 96
  25. 26
  26. 20
  27. 80
  28. 12
  29. 11
  30. 21/40
  31. 60
  32. 21
  33. 36
  34. 54
  35. 20
  36. 20
  37. 1400
  38. 40
  39. 79.4
  40. 6

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