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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 382 · 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 120° and 150°. What is the third angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 60° and 180°. What is the third angle (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 130° and 80°. What is the third angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  6. 6.Two angles of a triangle are 90° and 30°. What is the third angle (in degrees)?
  7. 7.An angle measures 95°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  8. 8.Two angles of a triangle are 100° and 70°. What is the third angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  10. 10.Two angles of a triangle are 50° and 40°. What is the third angle (in degrees)?
  11. 11.Two angles of a triangle are 95° and 55°. What is the third angle (in degrees)?
  12. 12.Two angles of a triangle are 40° and 110°. What is the third angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  15. 15.Two angles of a triangle are 20° and 155°. What is the third angle (in degrees)?
  16. 16.An angle measures 25°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  17. 17.Three angles meet at a point. Two of them are 100° and 200°. What is the third angle (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  19. 19.Two angles of a triangle are 100° and 45°. What is the third angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  23. 23.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  24. 24.An angle measures 105°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  25. 25.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  27. 27.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  28. 28.Two angles of a triangle are 70° and 65°. What is the third angle (in degrees)?
  29. 29.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  30. 30.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  31. 31.Two angles of a triangle are 95° and 45°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 140° and 80°. What is the third angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  37. 37.An angle measures 15°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  38. 38.Three angles meet at a point. Two of them are 110° and 170°. What is the third angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  40. 40.Two angles of a triangle are 25° and 25°. What is the third angle (in degrees)?

Answer key

  1. 90
  2. 120
  3. 30
  4. 150
  5. 140
  6. 60
  7. Obtuse
  8. 10
  9. 55
  10. 90
  11. 30
  12. 30
  13. 90
  14. 170
  15. 5
  16. Acute
  17. 60
  18. 120
  19. 35
  20. 60
  21. 85
  22. 150
  23. Straight
  24. Obtuse
  25. 135
  26. 30
  27. 25
  28. 45
  29. Right
  30. 70
  31. 40
  32. 140
  33. 30
  34. 65
  35. 90
  36. 40
  37. Acute
  38. 80
  39. 60
  40. 130

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