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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 442 · 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 9 o'clock (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  4. 4.Two angles of a triangle are 75° and 95°. What is the third angle (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  6. 6.An angle measures 120°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  7. 7.An angle measures 45°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  8. 8.Three angles meet at a point. Two of them are 140° and 70°. What is the third angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  10. 10.Two angles of a triangle are 75° and 80°. What is the third angle (in degrees)?
  11. 11.Two angles of a triangle are 50° and 50°. What is the third angle (in degrees)?
  12. 12.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  13. 13.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  14. 14.Two angles of a triangle are 95° and 45°. What is the third angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 70° and 220°. What is the third angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 110° and 90°. What is the third angle (in degrees)?
  25. 25.An angle measures 70°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  26. 26.Two angles of a triangle are 45° and 95°. What is the third angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  30. 30.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  31. 31.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 150° and 70°. What is the third angle (in degrees)?
  33. 33.Two angles of a triangle are 60° and 105°. What is the third angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  35. 35.Two angles of a triangle are 65° and 25°. What is the third angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  38. 38.Two angles of a triangle are 20° and 130°. What is the third angle (in degrees)?
  39. 39.Two angles of a triangle are 20° and 90°. What is the third angle (in degrees)?
  40. 40.An angle measures 40°. What kind of angle is it? (a) Straight (b) Right (c) Acute

Answer key

  1. 90
  2. 70
  3. 60
  4. 10
  5. 180
  6. Obtuse
  7. Acute
  8. 150
  9. 50
  10. 25
  11. 80
  12. 90
  13. Straight
  14. 40
  15. 160
  16. 150
  17. 145
  18. 30
  19. 120
  20. 75
  21. 80
  22. 70
  23. 35
  24. 160
  25. Acute
  26. 40
  27. 65
  28. 60
  29. 120
  30. Right
  31. 80
  32. 140
  33. 15
  34. 140
  35. 90
  36. 15
  37. 135
  38. 30
  39. 70
  40. Acute

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