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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 729 · 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 95° and 40°. What is the third angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 120° and 150°. What is the third angle (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  6. 6.Two angles of a triangle are 80° and 40°. What is the third angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 130° and 70°. What is the third angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 130° and 170°. What is the third angle (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  12. 12.An angle measures 60°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  13. 13.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  14. 14.Two angles of a triangle are 40° and 105°. What is the third angle (in degrees)?
  15. 15.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  16. 16.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 80° and 90°. What is the third angle (in degrees)?
  18. 18.Two angles of a triangle are 75° and 30°. What is the third angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 50° and 60°. What is the third angle (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  22. 22.Two angles of a triangle are 95° and 70°. What is the third angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  26. 26.Two angles of a triangle are 20° and 90°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 50° and 70°. What is the third angle (in degrees)?
  28. 28.Two angles of a triangle are 80° and 80°. What is the third angle (in degrees)?
  29. 29.An angle measures 135°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  30. 30.Two angles of a triangle are 80° and 50°. What is the third angle (in degrees)?
  31. 31.Two angles of a triangle are 55° and 50°. What is the third angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  33. 33.An angle measures 180°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  34. 34.Two angles of a triangle are 75° and 65°. What is the third angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 140° and 150°. What is the third angle (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 80° and 180°. What is the third angle (in degrees)?
  39. 39.Two angles of a triangle are 95° and 50°. What is the third angle (in degrees)?
  40. 40.An angle measures 105°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute

Answer key

  1. 45
  2. 60
  3. 90
  4. 145
  5. 180
  6. 60
  7. 140
  8. 160
  9. 60
  10. 90
  11. 125
  12. Acute
  13. 150
  14. 35
  15. Right
  16. 30
  17. 190
  18. 75
  19. 250
  20. 60
  21. 120
  22. 15
  23. 15
  24. 70
  25. 30
  26. 70
  27. 60
  28. 20
  29. Obtuse
  30. 50
  31. 75
  32. 150
  33. Straight
  34. 40
  35. 120
  36. 70
  37. 30
  38. 100
  39. 35
  40. Obtuse

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