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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 451 · 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 5 o'clock (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 50° and 50°. What is the third angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 150° and 140°. What is the third angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  9. 9.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  10. 10.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 140° and 110°. What is the third angle (in degrees)?
  12. 12.Two angles together make a straight line. 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 5°. What is the other angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 130° and 80°. What is the third angle (in degrees)?
  15. 15.An angle measures 150°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  16. 16.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  18. 18.Two angles of a triangle are 85° and 75°. What is the third angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 90° and 90°. What is the third angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 115°. What is the other 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.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  27. 27.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  28. 28.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 110° and 110°. What is the third angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 50° and 180°. What is the third angle (in degrees)?
  31. 31.Two angles of a triangle are 55° and 70°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 140° and 130°. What is the third angle (in degrees)?
  33. 33.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 70° and 100°. What is the third angle (in degrees)?
  35. 35.Two angles of a triangle are 75° and 45°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 25° and 55°. What is the third angle (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  38. 38.An angle measures 175°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  39. 39.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?

Answer key

  1. 150
  2. 50
  3. 90
  4. 30
  5. 260
  6. 70
  7. 170
  8. 65
  9. Straight
  10. 55
  11. 110
  12. 115
  13. 85
  14. 150
  15. Obtuse
  16. 120
  17. 60
  18. 20
  19. 70
  20. 180
  21. 50
  22. 65
  23. 70
  24. 60
  25. 30
  26. 10
  27. Right
  28. 35
  29. 140
  30. 130
  31. 55
  32. 90
  33. 60
  34. 190
  35. 60
  36. 100
  37. 60
  38. Obtuse
  39. 30
  40. 140

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