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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 628 · 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.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 110° and 190°. What is the third angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 100° and 150°. What is the third angle (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 60° and 160°. What is the third angle (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 60° and 220°. What is the third angle (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  8. 8.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  9. 9.An angle measures 145°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  10. 10.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  11. 11.Two angles of a triangle are 50° and 30°. What is the third angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 50° and 80°. What is the third angle (in degrees)?
  13. 13.Two angles of a triangle are 40° and 30°. What is the third angle (in degrees)?
  14. 14.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  15. 15.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  18. 18.Two angles of a triangle are 75° and 25°. What is the third angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  20. 20.Two angles of a triangle are 80° and 50°. What is the third angle (in degrees)?
  21. 21.An angle measures 55°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  22. 22.An angle measures 70°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  23. 23.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  24. 24.An angle measures 35°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  25. 25.Three angles meet at a point. Two of them are 90° and 130°. What is the third angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  28. 28.Two angles of a triangle are 20° and 40°. What is the third angle (in degrees)?
  29. 29.Two angles of a triangle are 50° and 95°. What is the third angle (in degrees)?
  30. 30.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 100° and 90°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 140° and 90°. What is the third angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  34. 34.Two angles of a triangle are 30° and 90°. What is the third angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  36. 36.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  38. 38.Two angles of a triangle are 35° and 105°. What is the third angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 70° and 150°. What is the third angle (in degrees)?
  40. 40.An angle measures 15°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse

Answer key

  1. 30
  2. 60
  3. 110
  4. 140
  5. 80
  6. 120
  7. 10
  8. Straight
  9. Obtuse
  10. 150
  11. 100
  12. 230
  13. 110
  14. Right
  15. 120
  16. 55
  17. 70
  18. 80
  19. 130
  20. 50
  21. Acute
  22. Acute
  23. 150
  24. Acute
  25. 140
  26. 140
  27. 155
  28. 120
  29. 35
  30. 90
  31. 170
  32. 130
  33. 95
  34. 60
  35. 30
  36. 150
  37. 45
  38. 40
  39. 140
  40. Acute

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