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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 349 · 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 90° and 170°. What is the third angle (in degrees)?
  2. 2.Two angles of a triangle are 55° and 120°. What is the third angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 90° and 60°. What is the third angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 70° and 120°. What is the third 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 5 o'clock (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 130° and 160°. What is the third angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 150° and 60°. What is the third angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 150° and 130°. What is the third angle (in degrees)?
  11. 11.An angle measures 75°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  12. 12.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  14. 14.Two angles of a triangle are 60° and 35°. What is the third angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  17. 17.Two angles of a triangle are 55° and 100°. What is the third angle (in degrees)?
  18. 18.Two angles of a triangle are 45° and 40°. What is the third angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  20. 20.Two angles of a triangle are 95° and 60°. What is the third angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  22. 22.Two angles of a triangle are 55° and 90°. What is the third angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 110° and 170°. What is the third angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 140° and 100°. What is the third angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 90° and 160°. What is the third angle (in degrees)?
  32. 32.An angle measures 35°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  33. 33.Two angles of a triangle are 35° and 30°. What is the third angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  36. 36.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  37. 37.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  38. 38.An angle measures 85°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  39. 39.Two angles of a triangle are 35° and 55°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 140° and 80°. What is the third angle (in degrees)?

Answer key

  1. 100
  2. 5
  3. 210
  4. 180
  5. 170
  6. 30
  7. 150
  8. 70
  9. 150
  10. 80
  11. Acute
  12. 50
  13. 30
  14. 85
  15. 130
  16. 45
  17. 25
  18. 95
  19. 120
  20. 25
  21. 40
  22. 35
  23. 10
  24. 80
  25. 150
  26. 80
  27. 50
  28. 5
  29. 10
  30. 120
  31. 110
  32. Acute
  33. 115
  34. 70
  35. 70
  36. 60
  37. Straight
  38. Acute
  39. 90
  40. 140

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