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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 952 · 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 together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 70° and 200°. What is the third angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 110° and 130°. What is the third angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 80° and 120°. What is the third angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  9. 9.Two angles of a triangle are 70° and 70°. What is the third angle (in degrees)?
  10. 10.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  11. 11.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  12. 12.Two angles of a triangle are 75° and 30°. What is the third angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 110° and 150°. What is the third angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 50° and 190°. What is the third angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 90° and 160°. What is the third angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  17. 17.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  18. 18.An angle measures 160°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  19. 19.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  26. 26.An angle measures 75°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  27. 27.An angle measures 50°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  28. 28.An angle measures 155°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  29. 29.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  32. 32.Two angles of a triangle are 95° and 20°. What is the third angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  34. 34.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  35. 35.An angle measures 95°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  36. 36.An angle measures 40°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  37. 37.Three angles meet at a point. Two of them are 110° and 50°. What is the third angle (in degrees)?
  38. 38.Two angles of a triangle are 100° and 20°. What is the third angle (in degrees)?
  39. 39.Two angles of a triangle are 40° and 50°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 70° and 190°. What is the third angle (in degrees)?

Answer key

  1. 170
  2. 90
  3. 120
  4. 35
  5. 150
  6. 160
  7. 160
  8. 75
  9. 40
  10. Right
  11. 90
  12. 75
  13. 100
  14. 120
  15. 110
  16. 20
  17. Straight
  18. Obtuse
  19. 150
  20. 180
  21. 25
  22. 65
  23. 120
  24. 55
  25. 150
  26. Acute
  27. Acute
  28. Obtuse
  29. 95
  30. 15
  31. 90
  32. 65
  33. 85
  34. 30
  35. Obtuse
  36. Acute
  37. 200
  38. 60
  39. 90
  40. 100

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