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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 32 · 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 35°. What is the other angle (in degrees)?
  2. 2.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  3. 3.Three angles meet at a point. Two of them are 80° and 190°. What is the third angle (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 120° and 140°. What is the third angle (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 90° and 130°. 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.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 130° and 160°. What is the third angle (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 20°. What is the other 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 150° and 100°. What is the third angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 140° and 80°. What is the third angle (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  18. 18.Two angles of a triangle are 30° and 115°. What is the third angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  22. 22.An angle measures 155°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  23. 23.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 60° and 90°. What is the third angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  26. 26.An angle measures 45°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  27. 27.An angle measures 115°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  28. 28.Three angles meet at a point. Two of them are 100° and 90°. What is the third angle (in degrees)?
  29. 29.Two angles of a triangle are 50° and 120°. What is the third angle (in degrees)?
  30. 30.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  31. 31.Two angles of a triangle are 95° and 70°. What is the third angle (in degrees)?
  32. 32.An angle measures 35°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  33. 33.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  34. 34.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  35. 35.Two angles of a triangle are 95° and 45°. What is the third angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 90° and 90°. What is the third angle (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 110° and 170°. What is the third angle (in degrees)?
  40. 40.An angle measures 80°. What kind of angle is it? (a) Straight (b) Acute (c) Right

Answer key

  1. 55
  2. Straight
  3. 90
  4. 100
  5. 30
  6. 55
  7. 50
  8. 140
  9. 170
  10. 25
  11. 70
  12. 70
  13. 60
  14. 110
  15. 140
  16. 120
  17. 80
  18. 35
  19. 150
  20. 150
  21. 70
  22. Obtuse
  23. 180
  24. 210
  25. 115
  26. Acute
  27. Obtuse
  28. 170
  29. 10
  30. 5
  31. 15
  32. Acute
  33. 95
  34. 90
  35. 40
  36. 180
  37. 75
  38. 30
  39. 80
  40. Acute

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