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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 977 · 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 35°. What is the other angle (in degrees)?
  2. 2.Two angles of a triangle are 85° and 85°. What is the third angle (in degrees)?
  3. 3.Two angles of a triangle are 25° and 115°. What is the third angle (in degrees)?
  4. 4.Two angles of a triangle are 95° and 20°. What is the third angle (in degrees)?
  5. 5.Two angles of a triangle are 35° and 120°. What is the third angle (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 50° and 80°. What is the third angle (in degrees)?
  8. 8.Two angles of a triangle are 95° and 60°. What is the third angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 100° and 60°. What is the third angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 50° and 70°. What is the third angle (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  16. 16.An angle measures 140°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  17. 17.An angle measures 180°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  18. 18.Two angles of a triangle are 95° and 30°. What is the third angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  21. 21.An angle measures 125°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  22. 22.An angle measures 120°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  23. 23.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  25. 25.Two angles of a triangle are 100° and 35°. What is the third angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 70° and 70°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 60° and 80°. What is the third angle (in degrees)?
  28. 28.Two angles of a triangle are 30° and 95°. What is the third angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  30. 30.An angle measures 55°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  31. 31.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  32. 32.An angle measures 60°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  33. 33.Two angles of a triangle are 20° and 110°. What is the third angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  37. 37.An angle measures 35°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  38. 38.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  40. 40.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?

Answer key

  1. 145
  2. 10
  3. 40
  4. 65
  5. 25
  6. 120
  7. 230
  8. 25
  9. 45
  10. 200
  11. 60
  12. 70
  13. 240
  14. 30
  15. 30
  16. Obtuse
  17. Straight
  18. 55
  19. 90
  20. 25
  21. Obtuse
  22. Obtuse
  23. 120
  24. 150
  25. 45
  26. 220
  27. 40
  28. 55
  29. 60
  30. Acute
  31. Right
  32. Acute
  33. 50
  34. 5
  35. 150
  36. 80
  37. Acute
  38. 150
  39. 50
  40. 40

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