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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 603 · 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.A right angle is split into two angles. One of them is 35°. 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.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  4. 4.An angle measures 45°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  5. 5.Two angles of a triangle are 30° and 25°. What is the third angle (in degrees)?
  6. 6.Two angles of a triangle are 55° and 105°. What is the third angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  8. 8.Two angles of a triangle are 60° and 110°. What is the third angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 150° and 120°. What is the third angle (in degrees)?
  10. 10.Two angles of a triangle are 65° and 35°. What is the third angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  16. 16.An angle measures 75°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  17. 17.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 100° and 80°. What is the third angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  22. 22.Two angles of a triangle are 55° and 110°. What is the third angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 90° and 80°. What is the third angle (in degrees)?
  24. 24.Two angles of a triangle are 95° and 25°. What is the third angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 110° and 160°. What is the third angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 90° and 60°. What is the third angle (in degrees)?
  27. 27.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 100° and 190°. What is the third angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 50° and 80°. What is the third angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  35. 35.An angle measures 155°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  36. 36.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  37. 37.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  38. 38.Three angles meet at a point. Two of them are 140° and 140°. What is the third angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 130° and 100°. What is the third angle (in degrees)?

Answer key

  1. 55
  2. 30
  3. Right
  4. Acute
  5. 125
  6. 20
  7. 5
  8. 10
  9. 90
  10. 80
  11. 150
  12. 130
  13. 165
  14. 75
  15. 65
  16. Acute
  17. 85
  18. 35
  19. 150
  20. 180
  21. 15
  22. 15
  23. 190
  24. 60
  25. 90
  26. 210
  27. 60
  28. 90
  29. 120
  30. 70
  31. 20
  32. 140
  33. 230
  34. 20
  35. Obtuse
  36. 95
  37. Straight
  38. 80
  39. 150
  40. 130

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