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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 889 · 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.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  2. 2.An angle measures 40°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  3. 3.An angle measures 25°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  4. 4.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 100° and 190°. What is the third angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 150° and 140°. What is the third angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 70° and 110°. What is the third angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 150° and 130°. What is the third angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 60° and 190°. What is the third angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 60° and 160°. What is the third angle (in degrees)?
  20. 20.Two angles of a triangle are 35° and 25°. What is the third angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  22. 22.An angle measures 90°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  23. 23.Three angles meet at a point. Two of them are 130° and 170°. What is the third angle (in degrees)?
  24. 24.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  25. 25.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  27. 27.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  29. 29.Two angles of a triangle are 45° and 75°. What is the third angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 50° and 90°. What is the third angle (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  34. 34.Two angles of a triangle are 85° and 20°. What is the third angle (in degrees)?
  35. 35.Two angles of a triangle are 60° and 55°. What is the third angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  37. 37.Two angles of a triangle are 55° and 50°. What is the third angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 80° and 120°. What is the third angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  40. 40.Two angles of a triangle are 50° and 45°. What is the third angle (in degrees)?

Answer key

  1. 60
  2. Acute
  3. Acute
  4. 5
  5. 95
  6. 70
  7. 30
  8. 70
  9. 135
  10. 70
  11. 60
  12. 180
  13. 165
  14. 60
  15. 155
  16. 80
  17. 110
  18. 120
  19. 140
  20. 120
  21. 75
  22. Right
  23. 60
  24. Straight
  25. 150
  26. 60
  27. 150
  28. 120
  29. 60
  30. 20
  31. 220
  32. 65
  33. 20
  34. 75
  35. 65
  36. 45
  37. 75
  38. 160
  39. 50
  40. 85

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