Grade 4 - Math

Grade 4 Measure Angles Worksheet

6 printable versions - Building Confidence - About 9 minutes each

0 of 10 answeredYour answers stay here while this page is open

Measure Angles

Grade 4 - Math - Building Confidence

Worksheet 1
  1. An angle measures 25 degrees on a protractor. What is its measure in degrees?

  2. Classify an angle that measures 90 degrees.

  3. Two angles form a straight angle. One angle is 40 degrees. What is the other angle?

  4. Two angles form a right angle. One angle is 40 degrees. What is the other angle?

  5. An angle measures 120 degrees on a protractor. What is its measure in degrees?

  6. Classify an angle that measures 105 degrees.

  7. Two angles form a straight angle. One angle is 90 degrees. What is the other angle?

  8. Two angles form a right angle. One angle is 70 degrees. What is the other angle?

  9. An angle measures 40 degrees on a protractor. What is its measure in degrees?

  10. Classify an angle that measures 25 degrees.

PencilGopencilgo.ai

About this worksheet

Measuring angles in degrees gives students a precise way to describe turns and corners is a major fourth-grade math step because students now work with larger numbers, multi-step reasoning, and more precise notation. Students may read the wrong protractor scale or classify the angle before checking the measure. This worksheet gives short, self-checking questions that rotate through the parts of the skill instead of repeating one template. Students identify angle measures, classify angles, find missing angles, and use degree benchmarks. Support versions keep the numbers friendlier while preserving the same reasoning. Standard and challenge versions add larger values, closer distractors, or an extra comparison step. Encourage your child to write down the place, operation, or unit before calculating. If an answer is close but does not match the requested place value, fraction denominator, or measurement unit, it is probably the trap answer.

What your child will learn

  • Measure angles
  • Classify angles
  • Find missing measures
  • Use degree benchmarks
  • Reason with protractors

Worked example

An angle measuring 115 degrees is obtuse because it is greater than 90 degrees and less than 180 degrees.

Common mistake

Calling a 100-degree angle acute because it looks narrow on the page.

Helpful hint

Compare the degree measure with 90 and 180.

Questions parents ask

What is the most common mistake with measure angles?
Calling a 100-degree angle acute because it looks narrow on the page.
How can I help my child with measure angles?
Compare the degree measure with 90 and 180.
Are these 4th grade math worksheets free to print?
Yes. All 6 printable versions on this page are free to download and print, with no account needed.

More 4th grade measurement worksheets

See all measurement worksheets