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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 787 · 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.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  5. 5.Two angles of a triangle are 95° and 40°. What is the third angle (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 140° and 100°. What is the third angle (in degrees)?
  9. 9.An angle measures 25°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  10. 10.An angle measures 80°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  11. 11.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  12. 12.An angle measures 180°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  13. 13.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  14. 14.An angle measures 10°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  15. 15.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  16. 16.An angle measures 95°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  17. 17.Three angles meet at a point. Two of them are 140° and 70°. What is the third angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 150° and 70°. What is the third angle (in degrees)?
  23. 23.An angle measures 90°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  24. 24.Three angles meet at a point. Two of them are 90° and 210°. What is the third angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 110° and 130°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 95° and 45°. What is the third angle (in degrees)?
  28. 28.Two angles of a triangle are 45° and 85°. What is the third angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 60° and 80°. What is the third angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 80° and 70°. What is the third angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  33. 33.Two angles of a triangle are 45° and 65°. What is the third angle (in degrees)?
  34. 34.Two angles of a triangle are 95° and 80°. What is the third angle (in degrees)?
  35. 35.Two angles of a triangle are 50° and 110°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 55° and 95°. What is the third angle (in degrees)?
  37. 37.Two angles of a triangle are 100° and 65°. What is the third angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  40. 40.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?

Answer key

  1. 85
  2. 120
  3. 10
  4. 55
  5. 45
  6. 150
  7. 80
  8. 120
  9. Acute
  10. Acute
  11. 25
  12. Straight
  13. 65
  14. Acute
  15. 30
  16. Obtuse
  17. 150
  18. 75
  19. 70
  20. 180
  21. 120
  22. 140
  23. Right
  24. 60
  25. 115
  26. 120
  27. 40
  28. 50
  29. 90
  30. 220
  31. 210
  32. 60
  33. 70
  34. 5
  35. 20
  36. 30
  37. 15
  38. 45
  39. 5
  40. 35

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