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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 813 · 40 sums
TalentJR

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 of a triangle are 100° and 65°. What is the third angle (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 100° and 130°. What is the third angle (in degrees)?
  4. 4.Two angles of a triangle are 20° and 40°. What is the third angle (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  7. 7.An angle measures 90°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  8. 8.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 80° and 210°. What is the third angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 110° and 50°. What is the third angle (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 150° and 150°. What is the third angle (in degrees)?
  14. 14.Two angles of a triangle are 55° and 85°. What is the third angle (in degrees)?
  15. 15.An angle measures 170°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  16. 16.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  17. 17.An angle measures 180°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  18. 18.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 50° and 240°. What is the third angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  25. 25.Two angles of a triangle are 35° and 115°. What is the third angle (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  27. 27.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 120° and 170°. What is the third angle (in degrees)?
  29. 29.An angle measures 140°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  30. 30.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 140° and 110°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 100° and 190°. What is the third angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  34. 34.Two angles of a triangle are 30° and 35°. What is the third angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 80° and 140°. What is the third angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  39. 39.Two angles of a triangle are 85° and 65°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?

Answer key

  1. 15
  2. 65
  3. 130
  4. 120
  5. 90
  6. 115
  7. Right
  8. 5
  9. 75
  10. 70
  11. 200
  12. 25
  13. 60
  14. 40
  15. Obtuse
  16. 15
  17. Straight
  18. 30
  19. 120
  20. 35
  21. 60
  22. 70
  23. 30
  24. 60
  25. 30
  26. 60
  27. 65
  28. 70
  29. Obtuse
  30. 155
  31. 110
  32. 70
  33. 90
  34. 115
  35. 120
  36. 20
  37. 140
  38. 75
  39. 30
  40. 70

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