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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 460 · 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 2 o'clock (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  6. 6.Two angles of a triangle are 60° and 55°. What is the third angle (in degrees)?
  7. 7.Two angles of a triangle are 55° and 40°. What is the third angle (in degrees)?
  8. 8.Two angles of a triangle are 30° and 145°. What is the third angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  10. 10.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 60° and 240°. What is the third angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 50° and 60°. What is the third angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 80° and 170°. What is the third angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 90° and 140°. What is the third angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 100° and 150°. What is the third angle (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  21. 21.An angle measures 110°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  22. 22.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  23. 23.Two angles of a triangle are 70° and 20°. What is the third angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  26. 26.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  27. 27.Two angles of a triangle are 50° and 115°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 120° and 160°. What is the third angle (in degrees)?
  30. 30.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 150° and 90°. What is the third angle (in degrees)?
  32. 32.An angle measures 65°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  33. 33.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  34. 34.An angle measures 90°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  35. 35.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  36. 36.Two angles of a triangle are 95° and 35°. What is the third angle (in degrees)?
  37. 37.An angle measures 15°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  38. 38.An angle measures 160°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  39. 39.Two angles of a triangle are 30° and 135°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?

Answer key

  1. 60
  2. 30
  3. 130
  4. 120
  5. 140
  6. 65
  7. 85
  8. 5
  9. 50
  10. 15
  11. 150
  12. 60
  13. 70
  14. 250
  15. 95
  16. 110
  17. 130
  18. 25
  19. 110
  20. 85
  21. Obtuse
  22. 10
  23. 90
  24. 45
  25. 35
  26. Straight
  27. 15
  28. 85
  29. 80
  30. 120
  31. 120
  32. Acute
  33. 80
  34. Right
  35. 90
  36. 50
  37. Acute
  38. Obtuse
  39. 15
  40. 35

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