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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 688 · 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.Three angles meet at a point. Two of them are 110° and 60°. What is the third angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 80° and 220°. What is the third angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  10. 10.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  13. 13.Two angles of a triangle are 75° and 30°. What is the third angle (in degrees)?
  14. 14.Two angles of a triangle are 95° and 65°. What is the third angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 120° and 140°. What is the third angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  20. 20.Two angles of a triangle are 95° and 75°. What is the third angle (in degrees)?
  21. 21.Two angles of a triangle are 35° and 45°. What is the third angle (in degrees)?
  22. 22.Two angles of a triangle are 35° and 120°. What is the third angle (in degrees)?
  23. 23.An angle measures 180°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  24. 24.Three angles meet at a point. Two of them are 120° and 50°. What is the third angle (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  26. 26.Two angles of a triangle are 40° and 85°. What is the third angle (in degrees)?
  27. 27.An angle measures 175°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  28. 28.An angle measures 35°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  29. 29.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  30. 30.An angle measures 155°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  31. 31.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 140° and 110°. What is the third angle (in degrees)?
  33. 33.Two angles of a triangle are 45° and 85°. What is the third angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 70° and 220°. What is the third angle (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 60° and 180°. What is the third angle (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  40. 40.An angle measures 60°. What kind of angle is it? (a) Acute (b) Straight (c) Right

Answer key

  1. 190
  2. 150
  3. 165
  4. 30
  5. 35
  6. 180
  7. 40
  8. 60
  9. 15
  10. 75
  11. 15
  12. 150
  13. 75
  14. 20
  15. 70
  16. 125
  17. 100
  18. 50
  19. 60
  20. 10
  21. 100
  22. 25
  23. Straight
  24. 190
  25. 80
  26. 55
  27. Obtuse
  28. Acute
  29. 30
  30. Obtuse
  31. 85
  32. 110
  33. 50
  34. 75
  35. 90
  36. 70
  37. 5
  38. 120
  39. 25
  40. Acute

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