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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 194 · 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.Three angles meet at a point. Two of them are 80° and 130°. What is the third angle (in degrees)?
  2. 2.An angle measures 90°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  3. 3.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  4. 4.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  10. 10.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 70° and 70°. What is the third angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 80° and 140°. What is the third angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 50° and 50°. What is the third angle (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  19. 19.An angle measures 125°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  20. 20.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 150° and 150°. What is the third angle (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 150° and 140°. What is the third angle (in degrees)?
  24. 24.Two angles of a triangle are 75° and 90°. What is the third angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  27. 27.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  29. 29.Two angles of a triangle are 45° and 65°. What is the third angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 100° and 200°. What is the third angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 60° and 200°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 50° and 120°. What is the third angle (in degrees)?
  33. 33.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  34. 34.Two angles of a triangle are 75° and 30°. What is the third angle (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  36. 36.Two angles of a triangle are 45° and 115°. What is the third angle (in degrees)?
  37. 37.Two angles of a triangle are 55° and 40°. What is the third angle (in degrees)?
  38. 38.Two angles of a triangle are 75° and 80°. What is the third angle (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?

Answer key

  1. 150
  2. Right
  3. Straight
  4. 90
  5. 30
  6. 130
  7. 110
  8. 115
  9. 180
  10. 75
  11. 220
  12. 140
  13. 10
  14. 15
  15. 55
  16. 170
  17. 260
  18. 120
  19. Obtuse
  20. 35
  21. 60
  22. 30
  23. 70
  24. 15
  25. 150
  26. 160
  27. 10
  28. 155
  29. 70
  30. 60
  31. 100
  32. 190
  33. 150
  34. 75
  35. 5
  36. 20
  37. 85
  38. 25
  39. 20
  40. 60

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