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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 823 · 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 of a triangle are 30° and 140°. What is the third angle (in degrees)?
  2. 2.Two angles of a triangle are 100° and 60°. What is the third angle (in degrees)?
  3. 3.Two angles of a triangle are 85° and 55°. What is the third angle (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 100° and 110°. What is the third angle (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 150° and 70°. What is the third angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 80° and 180°. What is the third angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 80° and 60°. What is the third angle (in degrees)?
  10. 10.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  12. 12.An angle measures 160°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  13. 13.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 120° and 170°. What is the third angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 70° and 160°. What is the third angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 100° and 130°. What is the third angle (in degrees)?
  23. 23.Two angles of a triangle are 95° and 35°. What is the third angle (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 60° and 160°. What is the third angle (in degrees)?
  26. 26.Two angles of a triangle are 65° and 105°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 75° and 85°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 110° and 160°. What is the third angle (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 50° and 230°. What is the third angle (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  32. 32.Two angles of a triangle are 70° and 70°. What is the third angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 75°. 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.An angle measures 155°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  36. 36.Two angles of a triangle are 35° and 40°. What is the third angle (in degrees)?
  37. 37.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  38. 38.Three angles meet at a point. Two of them are 90° and 80°. What is the third angle (in degrees)?
  39. 39.An angle measures 145°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  40. 40.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?

Answer key

  1. 10
  2. 20
  3. 40
  4. 150
  5. 140
  6. 100
  7. 70
  8. 150
  9. 220
  10. 35
  11. 60
  12. Obtuse
  13. 150
  14. 85
  15. 40
  16. 170
  17. 70
  18. 120
  19. 25
  20. 95
  21. 130
  22. 130
  23. 50
  24. 30
  25. 140
  26. 10
  27. 20
  28. 90
  29. 50
  30. 80
  31. 65
  32. 40
  33. 15
  34. 90
  35. Obtuse
  36. 105
  37. Right
  38. 190
  39. Obtuse
  40. 150

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