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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 922 · 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 50°. What is the other angle (in degrees)?
  2. 2.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  3. 3.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  4. 4.Two angles of a triangle are 95° and 55°. What is the third angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  7. 7.Two angles of a triangle are 45° and 25°. What is the third angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 150° and 60°. What is the third angle (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 70° and 80°. What is the third angle (in degrees)?
  12. 12.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  19. 19.An angle measures 85°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  20. 20.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 50° and 200°. What is the third angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  26. 26.Two angles of a triangle are 100° and 50°. What is the third angle (in degrees)?
  27. 27.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 130° and 100°. What is the third angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 70° and 90°. What is the third angle (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  33. 33.Two angles of a triangle are 40° and 70°. What is the third angle (in degrees)?
  34. 34.An angle measures 75°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  35. 35.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  36. 36.Two angles of a triangle are 100° and 65°. What is the third angle (in degrees)?
  37. 37.Two angles of a triangle are 90° and 60°. What is the third angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 70° and 130°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?

Answer key

  1. 40
  2. Right
  3. 150
  4. 30
  5. 25
  6. 10
  7. 110
  8. 30
  9. 150
  10. 120
  11. 210
  12. 30
  13. 50
  14. 45
  15. 60
  16. 150
  17. 50
  18. 90
  19. Acute
  20. 30
  21. 65
  22. 110
  23. 55
  24. 150
  25. 130
  26. 30
  27. 90
  28. 5
  29. 130
  30. 200
  31. 70
  32. 20
  33. 70
  34. Acute
  35. Straight
  36. 15
  37. 30
  38. 60
  39. 160
  40. 90

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