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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 300 · 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 7 o'clock (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 130° and 50°. What is the third angle (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 60° and 80°. What is the third angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  7. 7.An angle measures 90°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  8. 8.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  9. 9.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  10. 10.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 120° and 170°. What is the third angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 90° and 140°. What is the third angle (in degrees)?
  16. 16.Two angles of a triangle are 70° and 40°. What is the third angle (in degrees)?
  17. 17.An angle measures 15°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  18. 18.An angle measures 50°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  19. 19.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  20. 20.An angle measures 40°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  21. 21.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  22. 22.An angle measures 170°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  23. 23.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  27. 27.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  29. 29.Two angles of a triangle are 40° and 60°. What is the third angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  32. 32.Two angles of a triangle are 75° and 25°. What is the third angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 140° and 110°. What is the third angle (in degrees)?
  34. 34.Two angles of a triangle are 25° and 100°. What is the third angle (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 10°. What is the other angle (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 together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 70° and 140°. What is the third angle (in degrees)?

Answer key

  1. 150
  2. 180
  3. 90
  4. 35
  5. 220
  6. 60
  7. Right
  8. 120
  9. Straight
  10. 45
  11. 155
  12. 70
  13. 180
  14. 170
  15. 130
  16. 70
  17. Acute
  18. Acute
  19. 65
  20. Acute
  21. 30
  22. Obtuse
  23. 30
  24. 165
  25. 10
  26. 120
  27. 65
  28. 30
  29. 80
  30. 160
  31. 90
  32. 80
  33. 110
  34. 55
  35. 20
  36. 70
  37. 80
  38. 60
  39. 125
  40. 150

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