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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 703 · 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.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  2. 2.Two angles of a triangle are 80° and 55°. What is the third angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  4. 4.Two angles of a triangle are 80° and 40°. What is the third angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 100° and 90°. What is the third angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  9. 9.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  10. 10.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  14. 14.Two angles of a triangle are 90° and 70°. What is the third angle (in degrees)?
  15. 15.Two angles of a triangle are 45° and 50°. What is the third angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 50° and 100°. What is the third angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 70° and 230°. What is the third angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 150° and 140°. What is the third angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 140° and 110°. What is the third angle (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 70° and 150°. What is the third angle (in degrees)?
  30. 30.Two angles of a triangle are 85° and 55°. What is the third angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 110° and 100°. What is the third angle (in degrees)?
  34. 34.Two angles of a triangle are 25° and 125°. What is the third angle (in degrees)?
  35. 35.Two angles of a triangle are 60° and 90°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 75° and 90°. What is the third angle (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 50° and 70°. What is the third angle (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  40. 40.Two angles of a triangle are 30° and 95°. What is the third angle (in degrees)?

Answer key

  1. Straight
  2. 45
  3. 75
  4. 60
  5. 75
  6. 65
  7. 170
  8. 85
  9. Right
  10. 80
  11. 40
  12. 25
  13. 30
  14. 20
  15. 85
  16. 210
  17. 60
  18. 115
  19. 60
  20. 90
  21. 90
  22. 70
  23. 70
  24. 55
  25. 130
  26. 150
  27. 110
  28. 30
  29. 140
  30. 40
  31. 60
  32. 85
  33. 150
  34. 30
  35. 30
  36. 15
  37. 150
  38. 240
  39. 95
  40. 55

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