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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 13 · 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.Three angles meet at a point. Two of them are 130° and 70°. What is the third angle (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 90° and 50°. What is the third angle (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 140° and 110°. What is the third angle (in degrees)?
  6. 6.An angle measures 90°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  7. 7.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  8. 8.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  10. 10.An angle measures 85°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  11. 11.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 110° and 100°. What is the third angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 90° and 70°. What is the third angle (in degrees)?
  19. 19.Two angles of a triangle are 35° and 30°. What is the third angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 110° and 140°. What is the third angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 80° and 150°. What is the third angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 90° and 180°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 130° and 50°. What is the third angle (in degrees)?
  30. 30.Two angles of a triangle are 90° and 20°. What is the third angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  32. 32.Two angles of a triangle are 45° and 105°. What is the third angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  36. 36.Two angles of a triangle are 80° and 65°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  39. 39.An angle measures 150°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  40. 40.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?

Answer key

  1. 160
  2. 130
  3. 10
  4. 220
  5. 110
  6. Right
  7. Straight
  8. 10
  9. 120
  10. Acute
  11. 160
  12. 60
  13. 150
  14. 85
  15. 120
  16. 90
  17. 45
  18. 200
  19. 115
  20. 50
  21. 150
  22. 30
  23. 135
  24. 170
  25. 110
  26. 130
  27. 90
  28. 65
  29. 180
  30. 70
  31. 90
  32. 30
  33. 25
  34. 150
  35. 180
  36. 35
  37. 155
  38. 5
  39. Obtuse
  40. 115

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