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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 30 · 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 35°. What is the other angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 130° and 80°. What is the third angle (in degrees)?
  3. 3.Two angles of a triangle are 55° and 45°. What is the third angle (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 110° and 70°. What is the third angle (in degrees)?
  5. 5.Two angles of a triangle are 65° and 110°. What is the third angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 60° and 220°. What is the third angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  9. 9.Two angles of a triangle are 55° and 50°. What is the third angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 50° and 250°. What is the third angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  13. 13.An angle measures 30°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  14. 14.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 80° and 150°. What is the third angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 100° and 50°. What is the third angle (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 130° and 100°. What is the third angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  22. 22.Two angles of a triangle are 65° and 75°. What is the third angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 155°. What is the other 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 180°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  31. 31.Three angles meet at a point. Two of them are 150° and 120°. What is the third angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 90° and 210°. What is the third angle (in degrees)?
  34. 34.An angle measures 110°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  35. 35.Two angles of a triangle are 90° and 70°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 90° and 35°. What is the third angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 70° and 160°. What is the third angle (in degrees)?
  38. 38.An angle measures 50°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  39. 39.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  40. 40.An angle measures 105°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute

Answer key

  1. 55
  2. 150
  3. 80
  4. 180
  5. 5
  6. 80
  7. 150
  8. 150
  9. 75
  10. 60
  11. 150
  12. 30
  13. Acute
  14. 120
  15. 130
  16. 20
  17. 210
  18. 180
  19. 130
  20. 165
  21. 50
  22. 40
  23. 35
  24. 140
  25. 145
  26. 40
  27. 90
  28. 25
  29. 60
  30. Straight
  31. 90
  32. 60
  33. 60
  34. Obtuse
  35. 20
  36. 55
  37. 130
  38. Acute
  39. 90
  40. Obtuse

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