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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 58 · 40 sums
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The method (Know the totals): Acute < 90°, right = 90°, obtuse between 90° and 180°, straight = 180°. On a straight line: the two angles add up to 180°. In a triangle: the three angles add up to 180°. Around a point: 360°. Clock: each hour mark is 30° apart (360° ÷ 12).

NameDateTime takenScore ___ / 40
  1. 1.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  2. 2.Two angles of a triangle are 85° and 45°. What is the third angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 70° and 130°. What is the third angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  7. 7.An angle measures 90°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  8. 8.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  9. 9.Two angles of a triangle are 20° and 70°. What is the third angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 70° and 120°. What is the third angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 80° and 200°. What is the third angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 80° and 140°. What is the third angle (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 150° and 60°. What is the third angle (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 110° and 50°. What is the third angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  21. 21.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  22. 22.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 130° and 80°. What is the third angle (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  30. 30.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 90° and 80°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 50° and 140°. What is the third angle (in degrees)?
  33. 33.An angle measures 50°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  34. 34.Two angles of a triangle are 20° and 40°. What is the third angle (in degrees)?
  35. 35.Two angles of a triangle are 25° and 45°. What is the third angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 50° and 190°. What is the third angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 100° and 160°. What is the third angle (in degrees)?
  38. 38.Two angles of a triangle are 75° and 60°. What is the third angle (in degrees)?
  39. 39.Two angles of a triangle are 35° and 35°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 150° and 110°. What is the third angle (in degrees)?

Answer key

  1. 85
  2. 50
  3. 160
  4. 85
  5. 50
  6. 125
  7. Right
  8. 105
  9. 90
  10. 170
  11. 80
  12. 140
  13. 5
  14. 110
  15. 40
  16. 30
  17. 150
  18. 60
  19. 200
  20. 165
  21. Straight
  22. 65
  23. 150
  24. 120
  25. 90
  26. 60
  27. 65
  28. 10
  29. 45
  30. 180
  31. 190
  32. 170
  33. Acute
  34. 120
  35. 110
  36. 120
  37. 100
  38. 45
  39. 110
  40. 100

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