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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 307 · 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.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  2. 2.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 150° and 140°. What is the third angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 20°. 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.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 70° and 110°. What is the third angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 5 o'clock (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 80° and 180°. What is the third angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 90° and 200°. What is the third angle (in degrees)?
  15. 15.Two angles of a triangle are 45° and 50°. What is the third angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  17. 17.An angle measures 65°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  18. 18.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  19. 19.An angle measures 100°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  20. 20.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 140° and 140°. What is the third angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  27. 27.Two angles of a triangle are 35° and 110°. What is the third angle (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  29. 29.Two angles of a triangle are 85° and 35°. What is the third angle (in degrees)?
  30. 30.Two angles of a triangle are 65° and 55°. What is the third angle (in degrees)?
  31. 31.An angle measures 90°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  32. 32.Three angles meet at a point. Two of them are 50° and 90°. What is the third angle (in degrees)?
  33. 33.Two angles of a triangle are 65° and 35°. What is the third angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  36. 36.Two angles of a triangle are 30° and 25°. What is the third angle (in degrees)?
  37. 37.Two angles of a triangle are 80° and 95°. What is the third angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 140° and 110°. What is the third angle (in degrees)?
  39. 39.Two angles of a triangle are 50° and 85°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 80° and 150°. What is the third angle (in degrees)?

Answer key

  1. Straight
  2. 180
  3. 15
  4. 70
  5. 70
  6. 40
  7. 65
  8. 180
  9. 170
  10. 150
  11. 150
  12. 100
  13. 60
  14. 70
  15. 85
  16. 40
  17. Acute
  18. 60
  19. Obtuse
  20. 90
  21. 120
  22. 105
  23. 55
  24. 55
  25. 80
  26. 15
  27. 35
  28. 25
  29. 60
  30. 60
  31. Right
  32. 220
  33. 80
  34. 10
  35. 30
  36. 125
  37. 5
  38. 110
  39. 45
  40. 130

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