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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 730 · 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 110° and 180°. What is the third angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 80° and 220°. What is the third angle (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 50° and 190°. What is the third angle (in degrees)?
  6. 6.An angle measures 90°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  7. 7.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 70° and 210°. What is the third angle (in degrees)?
  10. 10.An angle measures 180°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  11. 11.A right angle is split into two angles. One of them is 70°. What is the other 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.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  15. 15.Two angles of a triangle are 80° and 45°. What is the third angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 80° and 180°. What is the third angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 80° and 160°. What is the third angle (in degrees)?
  20. 20.Two angles of a triangle are 100° and 25°. What is the third angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  22. 22.Two angles of a triangle are 50° and 40°. What is the third angle (in degrees)?
  23. 23.Two angles of a triangle are 25° and 150°. What is the third angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 50° and 70°. What is the third angle (in degrees)?
  25. 25.Two angles of a triangle are 30° and 40°. What is the third angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 130° and 60°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 95° and 25°. What is the third angle (in degrees)?
  28. 28.An angle measures 75°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  29. 29.Three angles meet at a point. Two of them are 150° and 80°. What is the third angle (in degrees)?
  30. 30.Two angles of a triangle are 20° and 145°. What is the third angle (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 150° and 140°. What is the third angle (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 150° and 100°. What is the third angle (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  40. 40.Two angles of a triangle are 55° and 40°. What is the third angle (in degrees)?

Answer key

  1. 70
  2. 150
  3. 180
  4. 60
  5. 120
  6. Right
  7. 35
  8. 90
  9. 80
  10. Straight
  11. 20
  12. 25
  13. 95
  14. 25
  15. 55
  16. 35
  17. 15
  18. 100
  19. 120
  20. 55
  21. 150
  22. 90
  23. 5
  24. 240
  25. 110
  26. 170
  27. 60
  28. Acute
  29. 130
  30. 15
  31. 5
  32. 120
  33. 100
  34. 70
  35. 80
  36. 110
  37. 40
  38. 150
  39. 60
  40. 85

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