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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 753 · 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 of a triangle are 75° and 95°. What is the third angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 70° and 130°. What is the third angle (in degrees)?
  3. 3.An angle measures 90°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  4. 4.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  5. 5.Three angles meet at a point. Two of them are 110° and 140°. What is the third angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 50° and 180°. What is the third angle (in degrees)?
  9. 9.An angle measures 145°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  10. 10.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 130° and 50°. What is the third angle (in degrees)?
  13. 13.Two angles of a triangle are 20° and 115°. What is the third 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.An angle measures 165°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  16. 16.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  20. 20.Two angles of a triangle are 30° and 75°. What is the third angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 70° and 150°. What is the third angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  25. 25.Two angles of a triangle are 55° and 100°. What is the third angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  28. 28.Two angles of a triangle are 45° and 45°. What is the third angle (in degrees)?
  29. 29.Two angles of a triangle are 95° and 60°. What is the third angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 50° and 240°. What is the third angle (in degrees)?
  31. 31.Two angles of a triangle are 70° and 25°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 120° and 150°. What is the third angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  34. 34.Two angles of a triangle are 90° and 50°. What is the third angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 120° and 170°. What is the third angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 140° and 130°. What is the third angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  40. 40.Two angles of a triangle are 25° and 40°. What is the third angle (in degrees)?

Answer key

  1. 10
  2. 160
  3. Right
  4. Straight
  5. 110
  6. 20
  7. 35
  8. 130
  9. Obtuse
  10. 60
  11. 55
  12. 180
  13. 45
  14. 75
  15. Obtuse
  16. 30
  17. 150
  18. 60
  19. 90
  20. 75
  21. 50
  22. 140
  23. 170
  24. 15
  25. 25
  26. 90
  27. 110
  28. 90
  29. 25
  30. 70
  31. 85
  32. 90
  33. 15
  34. 40
  35. 70
  36. 45
  37. 90
  38. 180
  39. 150
  40. 115

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