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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 708 · 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.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 140° and 150°. What is the third angle (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 150° and 120°. What is the third angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 60° and 120°. What is the third angle (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  11. 11.An angle measures 65°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  12. 12.Three angles meet at a point. Two of them are 140° and 80°. 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.An angle measures 90°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  15. 15.Two angles of a triangle are 90° and 35°. What is the third angle (in degrees)?
  16. 16.Two angles of a triangle are 100° and 65°. What is the third angle (in degrees)?
  17. 17.An angle measures 10°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  18. 18.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 110° and 90°. What is the third angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 120° and 90°. What is the third angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 50° and 90°. What is the third angle (in degrees)?
  27. 27.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  28. 28.Two angles of a triangle are 95° and 20°. What is the third angle (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 80° and 110°. What is the third angle (in degrees)?
  31. 31.Two angles of a triangle are 75° and 60°. What is the third angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 80° and 90°. What is the third angle (in degrees)?
  34. 34.Two angles of a triangle are 70° and 50°. What is the third angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 50° and 250°. What is the third angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  38. 38.An angle measures 110°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  39. 39.An angle measures 100°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  40. 40.Three angles meet at a point. Two of them are 100° and 140°. What is the third angle (in degrees)?

Answer key

  1. 120
  2. 70
  3. 65
  4. 60
  5. 40
  6. 90
  7. 15
  8. 180
  9. 120
  10. 45
  11. Acute
  12. 140
  13. 60
  14. Right
  15. 55
  16. 15
  17. Acute
  18. 85
  19. 105
  20. 160
  21. 125
  22. 150
  23. 180
  24. 90
  25. 150
  26. 220
  27. Straight
  28. 65
  29. 85
  30. 170
  31. 45
  32. 30
  33. 190
  34. 60
  35. 60
  36. 30
  37. 60
  38. Obtuse
  39. Obtuse
  40. 120

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