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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 519 · 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 5°. What is the other angle (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  6. 6.Two angles of a triangle are 45° and 70°. What is the third angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  9. 9.An angle measures 140°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  10. 10.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  11. 11.Three angles meet at a point. Two of them are 50° and 210°. What is the third angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 150° and 70°. What is the third angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  15. 15.An angle measures 175°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  16. 16.Three angles meet at a point. Two of them are 80° and 70°. What is the third angle (in degrees)?
  17. 17.An angle measures 115°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  18. 18.An angle measures 110°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  19. 19.Two angles of a triangle are 40° and 25°. What is the third angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 110° and 60°. What is the third angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  24. 24.An angle measures 180°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  25. 25.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 60° and 80°. What is the third angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  29. 29.Two angles of a triangle are 85° and 35°. What is the third angle (in degrees)?
  30. 30.Two angles of a triangle are 80° and 40°. What is the third angle (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  33. 33.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 100° and 160°. What is the third angle (in degrees)?
  36. 36.An angle measures 10°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  37. 37.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?

Answer key

  1. 85
  2. 5
  3. 60
  4. 150
  5. 65
  6. 65
  7. 90
  8. 120
  9. Obtuse
  10. Right
  11. 100
  12. 140
  13. 110
  14. 90
  15. Obtuse
  16. 210
  17. Obtuse
  18. Obtuse
  19. 115
  20. 190
  21. 50
  22. 135
  23. 60
  24. Straight
  25. 20
  26. 220
  27. 160
  28. 30
  29. 60
  30. 60
  31. 55
  32. 150
  33. 180
  34. 25
  35. 100
  36. Acute
  37. 120
  38. 30
  39. 140
  40. 80

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