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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 734 · 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.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 130° and 120°. What is the third angle (in degrees)?
  4. 4.Two angles of a triangle are 50° and 40°. What is the third angle (in degrees)?
  5. 5.An angle measures 20°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  6. 6.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  7. 7.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  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 7 o'clock (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  11. 11.Two angles of a triangle are 55° and 45°. What is the third angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  14. 14.Two angles of a triangle are 90° and 25°. What is the third angle (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 100° and 190°. What is the third angle (in degrees)?
  17. 17.Two angles of a triangle are 60° and 30°. What is the third angle (in degrees)?
  18. 18.Two angles of a triangle are 80° and 35°. What is the third angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 100° and 80°. What is the third angle (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  21. 21.Two angles of a triangle are 65° and 50°. What is the third angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  25. 25.Two angles of a triangle are 50° and 115°. What is the third angle (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  27. 27.Two angles of a triangle are 65° and 90°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  30. 30.Two angles of a triangle are 75° and 60°. What is the third angle (in degrees)?
  31. 31.Two angles of a triangle are 30° and 140°. What is the third angle (in degrees)?
  32. 32.An angle measures 80°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  33. 33.Three angles meet at a point. Two of them are 60° and 230°. What is the third angle (in degrees)?
  34. 34.Two angles of a triangle are 25° and 85°. What is the third angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 150° and 80°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 70° and 45°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 50° and 150°. What is the third angle (in degrees)?

Answer key

  1. 90
  2. 120
  3. 110
  4. 90
  5. Acute
  6. Straight
  7. Right
  8. 115
  9. 150
  10. 110
  11. 80
  12. 60
  13. 135
  14. 65
  15. 70
  16. 70
  17. 90
  18. 65
  19. 180
  20. 50
  21. 65
  22. 50
  23. 80
  24. 15
  25. 15
  26. 40
  27. 25
  28. 170
  29. 90
  30. 45
  31. 10
  32. Acute
  33. 70
  34. 70
  35. 130
  36. 65
  37. 30
  38. 60
  39. 85
  40. 160

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