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Angle Addition - Worksheet 7 - 4th Grade

Medium

Read angles in degrees, classify them and add adjacent angle measures.

medium: Practice the same exercise types with a fresh numbered set.

14 problems · 15-20 minutes · Skills: angles, addition, subtraction

About This Worksheet

This medium-level worksheet contains 14 problems designed for 4th Grade students practicing angle addition. Medium worksheets introduce larger numbers and varied question formats to deepen understanding and build fluency.

Read labeled dimensions and coordinates. Recall multiplication facts and length units.

  • Read angles in degrees, classify them and add adjacent angle measures.
  • Check your result using the method in the example before moving to the next question.

How to Solve: Worked Example

Example Problem: Ray OB lies inside angle AOC. Angle AOB is 62° and angle BOC is 30°. Find angle AOC.
Solution Steps:
  1. Adjacent angles add to make the whole angle.
Answer: 92 degrees
Tip: Check your result using the method in the example before moving to the next question.
1
Ray OB lies inside angle AOC. Angle AOB is 74° and angle BOC is 53°. Find angle AOC.
2
Ray OB lies inside angle AOC. Angle AOB is 13° and angle BOC is 70°. Find angle AOC.
3
Ray OB lies inside angle AOC. Angle AOB is 13° and angle BOC is 14°. Find angle AOC.
4
Ray OB lies inside angle AOC. Angle AOB is 79° and angle BOC is 47°. Find angle AOC.
5
Ray OB lies inside angle AOC. Angle AOB is 48° and angle BOC is 52°. Find angle AOC.
6
Ray OB lies inside angle AOC. Angle AOB is 65° and angle BOC is 39°. Find angle AOC.
7
Ray OB lies inside angle AOC. Angle AOB is 70° and angle BOC is 35°. Find angle AOC.
8
Ray OB lies inside angle AOC. Angle AOB is 16° and angle BOC is 63°. Find angle AOC.
9
Ray OB lies inside angle AOC. Angle AOB is 35° and angle BOC is 22°. Find angle AOC.
10
Ray OB lies inside angle AOC. Angle AOB is 18° and angle BOC is 42°. Find angle AOC.
11
Ray OB lies inside angle AOC. Angle AOB is 17° and angle BOC is 18°. Find angle AOC.
12
Ray OB lies inside angle AOC. Angle AOB is 64° and angle BOC is 16°. Find angle AOC.
13
Ray OB lies inside angle AOC. Angle AOB is 75° and angle BOC is 28°. Find angle AOC.
14
Ray OB lies inside angle AOC. Angle AOB is 35° and angle BOC is 32°. Find angle AOC.

Answer Key

1. 127 degrees2. 83 degrees3. 27 degrees4. 126 degrees5. 100 degrees6. 104 degrees7. 105 degrees8. 79 degrees9. 57 degrees10. 60 degrees11. 35 degrees12. 80 degrees13. 103 degrees14. 67 degrees

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Frequently Asked Questions

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How do I find worksheets at different difficulty levels?

Each subtopic has 10 worksheets: Worksheets 1-3 are Easy, 4-7 are Medium, and 8-10 are Hard. Start with Easy worksheets to build confidence, then progress to harder ones.

What skills does this angles worksheet cover?

This worksheet focuses on angles, addition, subtraction. It is designed for 4th Grade students and provides structured practice through varied problem types with a worked example to guide students before they begin.

Can I use this worksheet in my classroom?

Yes. All worksheets on K12Worksheets are free for classroom use. You can print copies for your entire class. With 10 worksheets per subtopic at three difficulty levels, you have plenty of options for differentiated instruction and individualized practice.

How many problems are on this worksheet?

This worksheet contains 14 problems. It typically takes 15-20 minutes to complete. An answer key with all solutions is included so parents and teachers can check work quickly.