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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 596 · 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.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  4. 4.Two angles of a triangle are 90° and 35°. What is the third angle (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 120° and 120°. What is the third angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  12. 12.An angle measures 100°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  13. 13.Two angles of a triangle are 75° and 60°. What is the third angle (in degrees)?
  14. 14.An angle measures 10°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  15. 15.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  17. 17.Two angles of a triangle are 35° and 85°. What is the third angle (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  21. 21.Two angles of a triangle are 30° and 75°. What is the third angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 100° and 80°. What is the third angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 140° and 110°. What is the third angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  26. 26.An angle measures 180°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  27. 27.Three angles meet at a point. Two of them are 70° and 150°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 90° and 90°. What is the third angle (in degrees)?
  29. 29.An angle measures 35°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  30. 30.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 90° and 120°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 140° and 150°. What is the third angle (in degrees)?
  33. 33.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 70° and 220°. What is the third angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  40. 40.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?

Answer key

  1. 30
  2. 60
  3. 120
  4. 55
  5. 90
  6. 120
  7. 75
  8. 150
  9. 60
  10. 25
  11. 45
  12. Obtuse
  13. 45
  14. Acute
  15. 140
  16. 40
  17. 60
  18. 90
  19. 150
  20. 120
  21. 75
  22. 180
  23. 110
  24. 50
  25. 155
  26. Straight
  27. 140
  28. 180
  29. Acute
  30. 65
  31. 150
  32. 70
  33. 30
  34. 65
  35. 20
  36. 5
  37. 40
  38. 70
  39. 70
  40. 45

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