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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 26 · 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 50° and 210°. What is the third angle (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  4. 4.An angle measures 180°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  5. 5.Two angles of a triangle are 100° and 55°. What is the third angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 70° and 110°. What is the third angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  8. 8.Two angles of a triangle are 50° and 45°. What is the third angle (in degrees)?
  9. 9.Two angles of a triangle are 75° and 95°. What is the third angle (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 140° and 80°. What is the third angle (in degrees)?
  12. 12.Two angles of a triangle are 75° and 30°. What is the third angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  15. 15.Two angles of a triangle are 80° and 40°. What is the third angle (in degrees)?
  16. 16.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  17. 17.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 50°. 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.Two angles of a triangle are 80° and 20°. What is the third angle (in degrees)?
  26. 26.Two angles of a triangle are 20° and 115°. What is the third angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 100° and 150°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 90° and 130°. What is the third angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 130° and 110°. What is the third angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  32. 32.An angle measures 55°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  33. 33.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 100° and 190°. What is the third angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 70° and 60°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 80° and 95°. What is the third angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 140° and 50°. What is the third angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 80° and 200°. What is the third angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?

Answer key

  1. 100
  2. 35
  3. 60
  4. Straight
  5. 25
  6. 180
  7. 25
  8. 85
  9. 10
  10. 180
  11. 140
  12. 75
  13. 150
  14. 150
  15. 60
  16. Right
  17. 145
  18. 140
  19. 60
  20. 160
  21. 30
  22. 90
  23. 130
  24. 170
  25. 80
  26. 45
  27. 110
  28. 140
  29. 155
  30. 120
  31. 65
  32. Acute
  33. 55
  34. 70
  35. 230
  36. 5
  37. 170
  38. 45
  39. 80
  40. 120

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