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Find the Whole Angle Using Addition – Grade 5

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📄 Find the Whole Angle Using Addition – Grade 5

Combine smaller adjacent angles to calculate a whole angle with this Grade 5 worksheet focused on addition and geometry reasoning.

Find the Whole Angle Using Addition

Add adjacent angle measures to find the whole angle in each problem.

Question 1: Two adjacent angles measure 32° and 41°. Find the whole angle.

Reveal answer and explanation

Answer: 73°.
Explanation: 32° + 41° = 73°.

Question 2: Three adjacent angles measure 20°, 35°, and 40°. What is their combined measure?

Reveal answer and explanation

Answer: 95°.
Explanation: 20° + 35° + 40° = 95°.

Question 3: Two adjacent angles measure 48° and 52°. Do they form a straight angle?

Reveal answer and explanation

Answer: No. Their total is 100°.
Explanation: 48° + 52° = 100°. A straight angle measures 180°.

Question 4: Two adjacent angles measure 67° and 23°. Find the whole angle.

Reveal answer and explanation

Answer: 90°.
Explanation: 67° + 23° = 90°.

Question 5: Three adjacent angles measure 15°, 25°, and 30°. Find the whole angle.

Reveal answer and explanation

Answer: 70°.
Explanation: 15° + 25° + 30° = 70°.