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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 799 · 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.Three angles meet at a point. Two of them are 130° and 50°. What is the third angle (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 130° and 120°. 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.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 140° and 120°. What is the third angle (in degrees)?
  9. 9.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  10. 10.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  11. 11.An angle measures 70°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  12. 12.An angle measures 55°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  13. 13.Three angles meet at a point. Two of them are 130° and 90°. What is the third angle (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  16. 16.An angle measures 100°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  17. 17.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  20. 20.Two angles of a triangle are 80° and 65°. What is the third angle (in degrees)?
  21. 21.Two angles of a triangle are 35° and 35°. What is the third angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 130° and 170°. What is the third angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 5°. 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.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  27. 27.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  29. 29.Two angles of a triangle are 25° and 120°. What is the third angle (in degrees)?
  30. 30.An angle measures 90°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  31. 31.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  32. 32.Two angles of a triangle are 80° and 95°. What is the third angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 80° and 170°. What is the third angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 90° and 170°. What is the third angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  36. 36.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 90° and 80°. What is the third angle (in degrees)?
  38. 38.Two angles of a triangle are 55° and 55°. What is the third angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  40. 40.Two angles of a triangle are 35° and 70°. What is the third angle (in degrees)?

Answer key

  1. 180
  2. 20
  3. 60
  4. 120
  5. 110
  6. 90
  7. 120
  8. 100
  9. Straight
  10. 105
  11. Acute
  12. Acute
  13. 140
  14. 180
  15. 10
  16. Obtuse
  17. 150
  18. 15
  19. 35
  20. 35
  21. 110
  22. 60
  23. 80
  24. 85
  25. 30
  26. 35
  27. 150
  28. 165
  29. 35
  30. Right
  31. 145
  32. 5
  33. 110
  34. 100
  35. 30
  36. 90
  37. 190
  38. 70
  39. 65
  40. 75

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