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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 774 · 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.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 60° and 70°. What is the third angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 110° and 120°. What is the third angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  11. 11.An angle measures 85°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  12. 12.Two angles of a triangle are 90° and 80°. What is the third angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  15. 15.Two angles of a triangle are 60° and 35°. What is the third angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 150° and 70°. What is the third angle (in degrees)?
  18. 18.Two angles of a triangle are 55° and 85°. What is the third angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 90° and 120°. What is the third angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  24. 24.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  25. 25.Two angles of a triangle are 95° and 70°. What is the third angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  28. 28.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  29. 29.Two angles of a triangle are 45° and 80°. What is the third angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 130° and 170°. What is the third angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 140° and 150°. What is the third angle (in degrees)?
  32. 32.An angle measures 170°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  33. 33.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  34. 34.Two angles of a triangle are 55° and 90°. What is the third angle (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  38. 38.An angle measures 30°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  39. 39.Two angles of a triangle are 20° and 30°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 80° and 210°. What is the third angle (in degrees)?

Answer key

  1. 80
  2. 80
  3. 230
  4. 30
  5. 150
  6. 130
  7. 105
  8. 85
  9. 110
  10. 150
  11. Acute
  12. 10
  13. 30
  14. 90
  15. 85
  16. 75
  17. 140
  18. 40
  19. 85
  20. 150
  21. 30
  22. 180
  23. 60
  24. Right
  25. 15
  26. 90
  27. 125
  28. Straight
  29. 55
  30. 60
  31. 70
  32. Obtuse
  33. 130
  34. 35
  35. 25
  36. 45
  37. 120
  38. Acute
  39. 130
  40. 70

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