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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 585 · 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 4 o'clock (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 50° and 100°. What is the third angle (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  4. 4.Two angles of a triangle are 65° and 35°. What is the third angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 150° and 60°. What is the third angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  12. 12.An angle measures 70°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  13. 13.An angle measures 175°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  14. 14.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  16. 16.An angle measures 180°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  17. 17.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  19. 19.Two angles of a triangle are 25° and 100°. What is the third angle (in degrees)?
  20. 20.An angle measures 20°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  21. 21.An angle measures 65°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  22. 22.Three angles meet at a point. Two of them are 80° and 190°. What is the third angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 80° and 120°. What is the third angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  25. 25.Two angles of a triangle are 30° and 135°. What is the third angle (in degrees)?
  26. 26.Two angles of a triangle are 30° and 45°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 50° and 30°. What is the third angle (in degrees)?
  28. 28.Two angles of a triangle are 20° and 85°. What is the third angle (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  30. 30.An angle measures 155°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  31. 31.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 90° and 200°. What is the third angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 130° and 170°. What is the third angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 110° and 60°. What is the third angle (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  39. 39.Two angles of a triangle are 95° and 20°. 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. 120
  2. 210
  3. 30
  4. 80
  5. 65
  6. 40
  7. 90
  8. 180
  9. 75
  10. 150
  11. 150
  12. Acute
  13. Obtuse
  14. 45
  15. 80
  16. Straight
  17. 60
  18. 30
  19. 55
  20. Acute
  21. Acute
  22. 90
  23. 160
  24. 70
  25. 15
  26. 105
  27. 100
  28. 75
  29. 75
  30. Obtuse
  31. 15
  32. 100
  33. 70
  34. 70
  35. 60
  36. 190
  37. 90
  38. 60
  39. 65
  40. Acute

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