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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 231 · 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 165°. What is the other angle (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  3. 3.An angle measures 180°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  4. 4.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  5. 5.An angle measures 90°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  6. 6.Three angles meet at a point. Two of them are 130° and 70°. What is the third angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  9. 9.Two angles of a triangle are 45° and 55°. What is the third angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 70° and 150°. What is the third angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  13. 13.Two angles of a triangle are 45° and 120°. What is the third angle (in degrees)?
  14. 14.Two angles of a triangle are 50° and 100°. What is the third angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 90° and 210°. What is the third angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 70° and 230°. What is the third angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 120° and 50°. What is the third angle (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 50° and 100°. What is the third angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 120° and 150°. What is the third angle (in degrees)?
  31. 31.Two angles of a triangle are 45° and 110°. What is the third angle (in degrees)?
  32. 32.Two angles of a triangle are 75° and 65°. What is the third angle (in degrees)?
  33. 33.Two angles of a triangle are 90° and 45°. What is the third angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  36. 36.An angle measures 110°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  37. 37.Three angles meet at a point. Two of them are 110° and 130°. What is the third angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 70° and 190°. What is the third angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?

Answer key

  1. 15
  2. 75
  3. Straight
  4. 120
  5. Right
  6. 160
  7. 130
  8. 90
  9. 80
  10. 140
  11. 30
  12. 80
  13. 15
  14. 30
  15. 60
  16. 115
  17. 50
  18. 85
  19. 25
  20. 170
  21. 60
  22. 60
  23. 60
  24. 65
  25. 150
  26. 70
  27. 190
  28. 55
  29. 210
  30. 90
  31. 25
  32. 40
  33. 45
  34. 15
  35. 90
  36. Obtuse
  37. 120
  38. 100
  39. 45
  40. 85

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