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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 715 · 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 130° and 70°. What is the third angle (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.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 80° and 200°. What is the third angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  9. 9.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  10. 10.Two angles of a triangle are 85° and 25°. What is the third angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  12. 12.An angle measures 80°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  13. 13.Three angles meet at a point. Two of them are 70° and 140°. What is the third angle (in degrees)?
  14. 14.Two angles of a triangle are 60° and 85°. What is the third angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 80° and 50°. What is the third angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 70° and 60°. What is the third angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 120° and 150°. What is the third angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 140° and 50°. What is the third angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 120° and 180°. What is the third angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  24. 24.An angle measures 135°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  25. 25.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  26. 26.Two angles of a triangle are 20° and 145°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 30° and 115°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 60° and 170°. What is the third angle (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  30. 30.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 90° and 80°. What is the third angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 100° and 100°. What is the third angle (in degrees)?
  34. 34.An angle measures 90°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  35. 35.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  36. 36.Two angles of a triangle are 60° and 75°. What is the third angle (in degrees)?
  37. 37.An angle measures 140°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  38. 38.Three angles meet at a point. Two of them are 140° and 110°. What is the third angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 100° and 150°. What is the third angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?

Answer key

  1. 160
  2. 70
  3. 170
  4. 60
  5. 35
  6. 80
  7. 90
  8. 45
  9. Straight
  10. 70
  11. 20
  12. Acute
  13. 150
  14. 35
  15. 180
  16. 230
  17. 230
  18. 145
  19. 65
  20. 90
  21. 170
  22. 60
  23. 165
  24. Obtuse
  25. 85
  26. 15
  27. 35
  28. 130
  29. 85
  30. 65
  31. 190
  32. 30
  33. 160
  34. Right
  35. 40
  36. 45
  37. Obtuse
  38. 110
  39. 110
  40. 90

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