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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 849 · 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 33.52 to one decimal place. =
  2. 2.12 : 2 = 84 : ?
  3. 3.The ratio of boys to girls in a class is 1 : 3. There are 4 boys. How many girls are there?
  4. 4.Which is closest to 1197 ÷ 41? (a) 30 (b) 15 (c) 300 (d) 60
  5. 5.Round 11108 to the nearest ten.
  6. 6.What is the smallest number you must add to 394 so that it divides exactly by 11?
  7. 7.Priya scored 1 marks out of 25 in a test. What percentage did Priya score?
  8. 8.What is the smallest number you must add to 735 so that it divides exactly by 9?
  9. 9.Two tanks hold 150 litres and 270 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  10. 10.A car goes 135 km on 9 litres of petrol. How far can it go on 37 litres (in km)?
  11. 11.Find the LCM of 12, 8 and 2.
  12. 12.What percent of 40 is 30?
  13. 13.15 ÷ 5 × 8 + 27 =
  14. 14.Arjun takes 60 seconds and Priya takes 72 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?
  15. 15.What percent of 40 is 16?
  16. 16.3 × (15 − 5) + 35 ÷ 7 =
  17. 17.What is 20% of 475?
  18. 18.What is 20% of 440?
  19. 19.Find the LCM of 8, 4 and 3.
  20. 20.Two tanks hold 90 litres and 240 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  21. 21.A hall floor is 250 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  22. 22.14 ÷ 7 × 6 + 24 =
  23. 23.77 ÷ 7 × 9 + 30 =
  24. 24.Find the LCM of 6 and 9.
  25. 25.If 7 kg of rice costs ₹616, how many kg can you buy for ₹1320?
  26. 26.Write 4/5 as a percent.
  27. 27.Find the HCF of 25 and 35.
  28. 28.Which is closest to 901 × 81? (Round each number first.) (a) 7200 (b) 720000 (c) 72000 (d) 144000
  29. 29.Find the HCF of 16 and 10.
  30. 30.8 painters can paint a school in 19 days. How many days would 19 painters take, working at the same speed?
  31. 31.Round 67.32 to one decimal place. =
  32. 32.Find the third proportional to 4 and 8 (that is, 4 : 8 = 8 : ?).
  33. 33.What is 15% of 120?
  34. 34.3 painters can paint a school in 7 days. How many days would 7 painters take, working at the same speed?
  35. 35.Which of these numbers divides exactly by 3? (a) 8273 (b) 3448 (c) 1751 (d) 8445
  36. 36.Find the HCF of 54 and 48.
  37. 37.11 : 8 = 55 : ?
  38. 38.70 ÷ 7 × 3 + 30 =
  39. 39.18 ÷ 6 × 8 + 8 =
  40. 40.56 ÷ 8 × 8 + 22 =

Answer key

  1. 33.5
  2. 14
  3. 12
  4. 30
  5. 11110
  6. 2
  7. 4
  8. 3
  9. 30
  10. 555
  11. 24
  12. 75
  13. 51
  14. 360
  15. 40
  16. 35
  17. 95
  18. 88
  19. 24
  20. 30
  21. 10
  22. 36
  23. 129
  24. 18
  25. 15
  26. 80
  27. 5
  28. 72000
  29. 2
  30. 8
  31. 67.3
  32. 16
  33. 18
  34. 3
  35. 8445
  36. 6
  37. 40
  38. 60
  39. 32
  40. 78

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