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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 633 · 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 60° and 150°. What is the third angle (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  5. 5.Two angles of a triangle are 20° and 90°. What is the third angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 150° and 80°. What is the third angle (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.An angle measures 170°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  9. 9.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  10. 10.Two angles of a triangle are 25° and 95°. What is the third angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 140° and 90°. What is the third angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 110° and 100°. What is the third angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  16. 16.Two angles of a triangle are 50° and 125°. What is the third angle (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 120° and 110°. 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.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 50° and 110°. What is the third angle (in degrees)?
  22. 22.An angle measures 90°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  23. 23.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  27. 27.Two angles of a triangle are 45° and 75°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  29. 29.Two angles of a triangle are 95° and 50°. What is the third angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  31. 31.Two angles of a triangle are 40° and 30°. What is the third angle (in degrees)?
  32. 32.Two angles of a triangle are 45° and 35°. What is the third angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  35. 35.Two angles of a triangle are 55° and 30°. What is the third angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 110° and 180°. What is the third angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 110° and 190°. What is the third angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 80° and 220°. What is the third angle (in degrees)?
  39. 39.Two angles of a triangle are 80° and 55°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?

Answer key

  1. 150
  2. 155
  3. 90
  4. 30
  5. 70
  6. 130
  7. 80
  8. Obtuse
  9. 60
  10. 60
  11. 130
  12. 85
  13. 150
  14. 150
  15. 35
  16. 5
  17. 60
  18. 130
  19. 120
  20. 25
  21. 200
  22. Right
  23. 130
  24. 170
  25. 180
  26. 120
  27. 60
  28. 125
  29. 35
  30. 100
  31. 110
  32. 100
  33. 75
  34. 30
  35. 95
  36. 70
  37. 60
  38. 60
  39. 45
  40. 25

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