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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 148 · 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 3 o'clock (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 80° and 100°. What is the third angle (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 70° and 130°. What is the third angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  6. 6.Two angles of a triangle are 90° and 20°. What is the third angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 140° and 130°. What is the third angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 100° and 150°. What is the third angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  10. 10.An angle measures 180°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  11. 11.Two angles of a triangle are 60° and 100°. What is the third angle (in degrees)?
  12. 12.Two angles of a triangle are 70° and 100°. What is the third angle (in degrees)?
  13. 13.An angle measures 35°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  14. 14.An angle measures 60°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  15. 15.Three angles meet at a point. Two of them are 70° and 220°. What is the third angle (in degrees)?
  16. 16.An angle measures 30°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  17. 17.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 50° and 200°. What is the third angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 140° and 90°. What is the third angle (in degrees)?
  24. 24.Two angles of a triangle are 40° and 90°. What is the third angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  27. 27.An angle measures 150°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  28. 28.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  32. 32.Two angles of a triangle are 75° and 75°. What is the third angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 60° and 170°. What is the third angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  36. 36.An angle measures 10°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  37. 37.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 130° and 60°. What is the third angle (in degrees)?
  40. 40.Two angles of a triangle are 90° and 50°. What is the third angle (in degrees)?

Answer key

  1. 90
  2. 125
  3. 180
  4. 160
  5. 60
  6. 70
  7. 90
  8. 110
  9. 90
  10. Straight
  11. 20
  12. 10
  13. Acute
  14. Acute
  15. 70
  16. Acute
  17. 60
  18. 130
  19. 110
  20. 45
  21. 170
  22. 85
  23. 130
  24. 50
  25. 120
  26. 20
  27. Obtuse
  28. 65
  29. 150
  30. 165
  31. 75
  32. 30
  33. 55
  34. 130
  35. 60
  36. Acute
  37. 25
  38. 65
  39. 170
  40. 40

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