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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 485 · 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 160°. What is the third angle (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 130° and 50°. What is the third angle (in degrees)?
  4. 4.An angle measures 30°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  5. 5.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 70° and 80°. What is the third angle (in degrees)?
  10. 10.An angle measures 80°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  11. 11.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  12. 12.An angle measures 45°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  13. 13.Two angles of a triangle are 35° and 135°. What is the third angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  15. 15.Two angles of a triangle are 20° and 100°. 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.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  18. 18.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 130° and 160°. What is the third angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  24. 24.Two angles of a triangle are 70° and 100°. What is the third angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  27. 27.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 60° and 70°. What is the third angle (in degrees)?
  31. 31.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  32. 32.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  33. 33.Two angles of a triangle are 55° and 55°. What is the third angle (in degrees)?
  34. 34.An angle measures 25°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  35. 35.Three angles meet at a point. Two of them are 80° and 170°. What is the third angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 160°. What is the other 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. 150
  2. 50
  3. 180
  4. Acute
  5. 30
  6. 75
  7. 60
  8. 170
  9. 210
  10. Acute
  11. 85
  12. Acute
  13. 10
  14. 105
  15. 60
  16. 125
  17. Straight
  18. 55
  19. 15
  20. 70
  21. 55
  22. 30
  23. 120
  24. 10
  25. 35
  26. 30
  27. 180
  28. 60
  29. 35
  30. 230
  31. Right
  32. 150
  33. 70
  34. Acute
  35. 110
  36. 150
  37. 65
  38. 50
  39. 20
  40. 90

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