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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 895 · 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 165°. What is the other angle (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  3. 3.Two angles of a triangle are 60° and 25°. What is the third angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  6. 6.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  7. 7.Three angles meet at a point. Two of them are 80° and 60°. What is the third angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  11. 11.Two angles of a triangle are 65° and 105°. What is the third angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 150° and 130°. What is the third angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 110° and 90°. What is the third angle (in degrees)?
  16. 16.Two angles of a triangle are 50° and 20°. What is the third angle (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  18. 18.An angle measures 110°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  19. 19.Two angles of a triangle are 100° and 45°. What is the third angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 70° and 100°. What is the third angle (in degrees)?
  21. 21.Two angles of a triangle are 90° and 40°. What is the third angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  23. 23.Two angles of a triangle are 60° and 20°. What is the third angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  25. 25.Two angles of a triangle are 90° and 50°. What is the third angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  27. 27.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  31. 31.An angle measures 90°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  32. 32.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 130° and 170°. What is the third angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  36. 36.An angle measures 45°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  37. 37.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  40. 40.Two angles of a triangle are 80° and 25°. What is the third angle (in degrees)?

Answer key

  1. 15
  2. 20
  3. 95
  4. 75
  5. 105
  6. Straight
  7. 220
  8. 35
  9. 120
  10. 150
  11. 10
  12. 80
  13. 120
  14. 65
  15. 160
  16. 110
  17. 90
  18. Obtuse
  19. 35
  20. 190
  21. 50
  22. 130
  23. 100
  24. 40
  25. 40
  26. 70
  27. 30
  28. 60
  29. 155
  30. 170
  31. Right
  32. 150
  33. 40
  34. 60
  35. 165
  36. Acute
  37. 45
  38. 30
  39. 50
  40. 75

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