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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 998 · 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.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?
  2. 2.1/2 + 4/6 =
  3. 3.Which is closest to 403 + 495 + 595? (a) 1700 (b) 1500 (c) 1600 (d) 1400
  4. 4.Write 1/20 as a percent.
  5. 5.Which is closest to 500 + 297 + 701? (a) 1600 (b) 1400 (c) 1700 (d) 1500
  6. 6.1/3 + 1/8 =
  7. 7.Which is closest to 896 + 800 + 602? (a) 2200 (b) 2500 (c) 2300 (d) 2400
  8. 8.35 + 9 × 6 − 34 =
  9. 9.1/5 + 4/8 =
  10. 10.2.21 + 3.3 =
  11. 11.What is the smallest number you must add to 605 so that it divides exactly by 7?
  12. 12.The ratio of boys to girls in a class is 2 : 9. There are 6 boys. How many girls are there?
  13. 13.Find the HCF of 8 and 20.
  14. 14.Find the HCF of 45 and 27.
  15. 15.Two tanks hold 135 litres and 120 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  16. 16.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 6, 3 or 15.
  17. 17.80% of a number is 276. What is the number?
  18. 18.A car goes 115 km on 5 litres of petrol. How far can it go on 35 litres (in km)?
  19. 19.Find the HCF of 49 and 42.
  20. 20.16.8 ÷ 4 =
  21. 21.Find the LCM of 15, 13 and 3.
  22. 22.What is 5% of 400?
  23. 23.Round 42481 to the nearest ten.
  24. 24.Which of these numbers divides exactly by 3? (a) 7509 (b) 7933 (c) 1474 (d) 9976
  25. 25.Arjun takes 90 seconds and Kavya takes 75 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?
  26. 26.4/7 × 1/2 =
  27. 27.Two tanks hold 80 litres and 30 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  28. 28.A car goes 152 km on 8 litres of petrol. How far can it go on 27 litres (in km)?
  29. 29.1.9 × 2 =
  30. 30.What is the smallest number you must take away from 404 so that it divides exactly by 6?
  31. 31.The HCF of two numbers is 4 and their LCM is 24. One of the numbers is 8. What is the other number?
  32. 32.1/3 + 4/11 =
  33. 33.How many factors does 36 have?
  34. 34.A hall floor is 315 cm long and 135 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  35. 35.Round 92.13 to one decimal place. =
  36. 36.Find the HCF of 120 and 135.
  37. 37.What is the smallest number you must add to 138 so that it divides exactly by 13?
  38. 38.Find the smallest number bigger than 10 that leaves a remainder of 3 when divided by 4, 10 or 6.
  39. 39.Two tanks hold 105 litres and 45 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  40. 40.Find the HCF of 32 and 40.

Answer key

  1. 14
  2. 7/6
  3. 1500
  4. 5
  5. 1500
  6. 11/24
  7. 2300
  8. 55
  9. 7/10
  10. 5.51
  11. 4
  12. 27
  13. 4
  14. 9
  15. 15
  16. 31
  17. 345
  18. 805
  19. 7
  20. 4.2
  21. 195
  22. 20
  23. 42480
  24. 7509
  25. 450
  26. 2/7
  27. 10
  28. 513
  29. 3.8
  30. 2
  31. 12
  32. 23/33
  33. 9
  34. 21
  35. 92.1
  36. 15
  37. 5
  38. 63
  39. 15
  40. 8

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