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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 896 · 40 sums
TalentJR

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 75°. What is the other angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 50° and 250°. What is the third angle (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 120° and 130°. What is the third angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 70° and 100°. What is the third angle (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  14. 14.An angle measures 150°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  15. 15.An angle measures 60°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  16. 16.Two angles of a triangle are 40° and 50°. What is the third angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 60° and 180°. What is the third angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 80° and 100°. What is the third angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  21. 21.Two angles of a triangle are 100° and 75°. What is the third angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 130° and 120°. What is the third angle (in degrees)?
  24. 24.Two angles of a triangle are 90° and 30°. What is the third angle (in degrees)?
  25. 25.Two angles of a triangle are 25° and 20°. What is the third angle (in degrees)?
  26. 26.Two angles of a triangle are 50° and 35°. What is the third angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  28. 28.Two angles of a triangle are 75° and 45°. What is the third angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 70° and 210°. What is the third angle (in degrees)?
  33. 33.Two angles of a triangle are 90° and 80°. What is the third angle (in degrees)?
  34. 34.Two angles of a triangle are 75° and 75°. What is the third angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 150° and 90°. What is the third angle (in degrees)?
  36. 36.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  38. 38.An angle measures 90°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  39. 39.Two angles of a triangle are 100° and 35°. What is the third angle (in degrees)?
  40. 40.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight

Answer key

  1. 105
  2. 60
  3. 150
  4. 35
  5. 110
  6. 10
  7. 150
  8. 60
  9. 190
  10. 90
  11. 160
  12. 20
  13. 165
  14. Obtuse
  15. Acute
  16. 90
  17. 120
  18. 85
  19. 180
  20. 70
  21. 5
  22. 65
  23. 110
  24. 60
  25. 135
  26. 95
  27. 155
  28. 60
  29. 120
  30. 15
  31. 10
  32. 80
  33. 10
  34. 30
  35. 120
  36. 90
  37. 60
  38. Right
  39. 45
  40. Straight

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