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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 854 · 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 90° and 130°. What is the third angle (in degrees)?
  2. 2.Two angles of a triangle are 95° and 70°. What is the third angle (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 together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  5. 5.An angle measures 70°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  6. 6.Three angles meet at a point. Two of them are 100° and 180°. What is the third angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 70° and 210°. What is the third angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  10. 10.Two angles of a triangle are 90° and 25°. What is the third angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  13. 13.Two angles of a triangle are 30° and 65°. What is the third angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  15. 15.Two angles of a triangle are 75° and 40°. What is the third angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  18. 18.Two angles of a triangle are 90° and 80°. What is the third angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  22. 22.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  23. 23.Three angles meet at a point. Two of them are 50° and 250°. What is the third angle (in degrees)?
  24. 24.An angle measures 90°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  25. 25.Three angles meet at a point. Two of them are 80° and 140°. What is the third angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  27. 27.Two angles of a triangle are 100° and 20°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 100° and 50°. What is the third angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 140° and 80°. What is the third angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 60° and 240°. What is the third angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 120° and 50°. What is the third angle (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 30°. What is the other angle (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.Three angles meet at a point. Two of them are 50° and 200°. What is the third angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 130° and 160°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?

Answer key

  1. 140
  2. 15
  3. 120
  4. 115
  5. Acute
  6. 80
  7. 20
  8. 80
  9. 60
  10. 65
  11. 90
  12. 160
  13. 85
  14. 85
  15. 65
  16. 125
  17. 75
  18. 10
  19. 80
  20. 150
  21. 150
  22. Straight
  23. 60
  24. Right
  25. 140
  26. 95
  27. 60
  28. 210
  29. 140
  30. 60
  31. 190
  32. 25
  33. 150
  34. 65
  35. 110
  36. 70
  37. 60
  38. 65
  39. 60
  40. 35

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