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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 294 · 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.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 110° and 100°. What is the third angle (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  6. 6.An angle measures 180°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  7. 7.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  8. 8.Two angles of a triangle are 30° and 125°. What is the third angle (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  13. 13.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  14. 14.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  16. 16.An angle measures 100°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  17. 17.Three angles meet at a point. Two of them are 90° and 170°. What is the third angle (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  21. 21.An angle measures 65°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  22. 22.Two angles of a triangle are 25° and 90°. What is the third angle (in degrees)?
  23. 23.Two angles of a triangle are 45° and 25°. What is the third angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 150° and 100°. What is the third angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  30. 30.An angle measures 115°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  31. 31.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  33. 33.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 80° and 90°. What is the third angle (in degrees)?
  37. 37.Two angles of a triangle are 30° and 145°. What is the third angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 100° and 70°. What is the third angle (in degrees)?
  39. 39.Two angles of a triangle are 50° and 45°. What is the third angle (in degrees)?
  40. 40.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?

Answer key

  1. 5
  2. 30
  3. 50
  4. 150
  5. 150
  6. Straight
  7. 180
  8. 25
  9. 120
  10. 145
  11. 120
  12. 55
  13. Right
  14. 85
  15. 150
  16. Obtuse
  17. 100
  18. 30
  19. 165
  20. 90
  21. Acute
  22. 65
  23. 110
  24. 160
  25. 60
  26. 30
  27. 45
  28. 110
  29. 170
  30. Obtuse
  31. 35
  32. 40
  33. 60
  34. 110
  35. 115
  36. 190
  37. 5
  38. 190
  39. 85
  40. 45

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