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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 110 · 40 sums
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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.An angle measures 90°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  2. 2.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 110° and 180°. What is the third angle (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 80° and 110°. What is the third angle (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  7. 7.Two angles of a triangle are 65° and 40°. What is the third angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 60° and 50°. What is the third angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  11. 11.Two angles of a triangle are 100° and 50°. What is the third angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 110° and 100°. What is the third angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 130° and 50°. What is the third angle (in degrees)?
  15. 15.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  16. 16.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 110° and 70°. What is the third angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  22. 22.An angle measures 170°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  23. 23.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 150° and 90°. What is the third angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 100° and 160°. What is the third angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  27. 27.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 80° and 190°. What is the third angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  30. 30.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  31. 31.Two angles of a triangle are 25° and 45°. What is the third angle (in degrees)?
  32. 32.Two angles of a triangle are 45° and 55°. What is the third angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  34. 34.Two angles of a triangle are 35° and 135°. What is the third angle (in degrees)?
  35. 35.An angle measures 150°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  36. 36.Two angles of a triangle are 90° and 65°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 100° and 50°. What is the third angle (in degrees)?

Answer key

  1. Right
  2. 60
  3. 60
  4. 70
  5. 170
  6. 90
  7. 75
  8. 120
  9. 250
  10. 55
  11. 30
  12. 150
  13. 50
  14. 180
  15. Straight
  16. 30
  17. 180
  18. 125
  19. 5
  20. 90
  21. 110
  22. Obtuse
  23. 30
  24. 120
  25. 100
  26. 120
  27. 75
  28. 90
  29. 105
  30. 40
  31. 110
  32. 80
  33. 30
  34. 10
  35. Obtuse
  36. 25
  37. 80
  38. 80
  39. 170
  40. 210

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