Angle Addition Problems
Grade 4 - Math - On Level
Angle addition: a 90 degree angle is split into 42 degrees and x degrees. What is x?
Which equation models the missing angle in a 120 degree angle with one part 45 degrees?
- 45 - x = 120
- 120 - x = 165
- 45 + x = 120
- 120 + 45 = x
Angle addition: a 180 degree angle is split into 131 degrees and x degrees. What is x?
Which equation models the missing angle in a 150 degree angle with one part 70 degrees?
- 70 + x = 150
- 150 - x = 220
- 70 - x = 150
- 150 + 70 = x
Angle addition: a 90 degree angle is split into 39 degrees and x degrees. What is x?
Which equation models the missing angle in a 180 degree angle with one part 146 degrees?
- 180 - x = 326
- 180 + 146 = x
- 146 - x = 180
- 146 + x = 180
Angle addition: a 180 degree angle is split into 149 degrees and x degrees. What is x?
Which equation models the missing angle in a 120 degree angle with one part 47 degrees?
- 47 - x = 120
- 120 + 47 = x
- 120 - x = 167
- 47 + x = 120
Angle addition: a 120 degree angle is split into 78 degrees and x degrees. What is x?
Which equation models the missing angle in a 90 degree angle with one part 25 degrees?
- 25 - x = 90
- 90 + 25 = x
- 90 - x = 115
- 25 + x = 90