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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 487 · 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.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  3. 3.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  4. 4.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 60°. 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.Three angles meet at a point. Two of them are 150° and 60°. 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.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 110° and 170°. What is the third angle (in degrees)?
  13. 13.Two angles of a triangle are 60° and 90°. What is the third angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 80° and 110°. What is the third angle (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  18. 18.Two angles of a triangle are 85° and 35°. What is the third angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 100° and 200°. What is the third angle (in degrees)?
  20. 20.Two angles of a triangle are 85° and 60°. What is the third angle (in degrees)?
  21. 21.Two angles of a triangle are 30° and 80°. What is the third angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 100° and 120°. What is the third angle (in degrees)?
  23. 23.Two angles of a triangle are 30° and 105°. What is the third angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  27. 27.An angle measures 35°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  28. 28.Three angles meet at a point. Two of them are 90° and 60°. What is the third angle (in degrees)?
  29. 29.An angle measures 120°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  30. 30.Two angles of a triangle are 30° and 95°. What is the third angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  32. 32.An angle measures 100°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  33. 33.Two angles of a triangle are 35° and 90°. What is the third angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 60° and 140°. What is the third angle (in degrees)?
  36. 36.An angle measures 125°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  37. 37.Three angles meet at a point. Two of them are 70° and 140°. What is the third angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  39. 39.Two angles of a triangle are 65° and 30°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?

Answer key

  1. 120
  2. 90
  3. Straight
  4. 85
  5. 130
  6. 30
  7. 60
  8. 150
  9. 90
  10. 60
  11. 90
  12. 80
  13. 30
  14. 55
  15. 170
  16. 150
  17. 135
  18. 60
  19. 60
  20. 35
  21. 70
  22. 140
  23. 45
  24. 150
  25. 35
  26. 15
  27. Acute
  28. 210
  29. Obtuse
  30. 55
  31. 30
  32. Obtuse
  33. 55
  34. 85
  35. 160
  36. Obtuse
  37. 150
  38. 180
  39. 85
  40. 30

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