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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 138 · 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.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 70° and 160°. What is the third angle (in degrees)?
  7. 7.An angle measures 180°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  8. 8.Two angles of a triangle are 45° and 110°. What is the third angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  10. 10.Two angles of a triangle are 95° and 35°. What is the third angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 140° and 130°. What is the third angle (in degrees)?
  13. 13.Two angles of a triangle are 70° and 95°. What is the third angle (in degrees)?
  14. 14.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  15. 15.Two angles of a triangle are 70° and 75°. What is the third angle (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 100° and 60°. What is the third angle (in degrees)?
  18. 18.Two angles of a triangle are 30° and 105°. What is the third angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 120° and 180°. What is the third angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 50° and 210°. What is the third angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  22. 22.Two angles of a triangle are 90° and 75°. What is the third angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  25. 25.An angle measures 100°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  26. 26.Two angles of a triangle are 95° and 65°. What is the third angle (in degrees)?
  27. 27.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  28. 28.An angle measures 15°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  29. 29.Three angles meet at a point. Two of them are 60° and 120°. What is the third angle (in degrees)?
  30. 30.An angle measures 105°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  31. 31.Two angles of a triangle are 30° and 30°. What is the third angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  33. 33.Two angles of a triangle are 20° and 130°. What is the third angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  35. 35.Two angles of a triangle are 90° and 30°. What is the third angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 90° and 70°. What is the third angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 60° and 110°. What is the third angle (in degrees)?
  39. 39.Two angles of a triangle are 90° and 60°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 130° and 140°. What is the third angle (in degrees)?

Answer key

  1. 120
  2. 90
  3. 100
  4. 50
  5. 5
  6. 130
  7. Straight
  8. 25
  9. 85
  10. 50
  11. 40
  12. 90
  13. 15
  14. Right
  15. 35
  16. 150
  17. 200
  18. 45
  19. 60
  20. 100
  21. 60
  22. 15
  23. 60
  24. 30
  25. Obtuse
  26. 20
  27. 60
  28. Acute
  29. 180
  30. Obtuse
  31. 120
  32. 30
  33. 30
  34. 75
  35. 60
  36. 10
  37. 200
  38. 190
  39. 30
  40. 90

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