How it works
This measuring angles worksheet opens with 4 angles on one page, acute and obtuse mixed, each a multiple of 5°. Every ray prints about 60 mm (2 3/8 inches) long. Press Print or PDF, or New sheet for other angles.
Read the full guide
Five tasks, three that need no protractor
Under On the sheet, Measure with a protractor and Draw an angle on a ray need a real protractor. Read a printed protractor and Draw on a printed protractor put the half circle on the page, so an angle measurement worksheet still works in a room with no protractors. Two parts make a whole hides one angle of three, as in 90 − 55 = 35.
Tens, Fives or Any degree
Angle sizes sets how fine the readings are. For 4th grade angles worksheets, Tens gives sizes such as 60° and 140°; Any degree asks for sizes such as 68°. Reflex angles too adds angles past 180°, such as 305°. Problems sets 4 to 24: 4 measuring problems fit one page and 8 take 2.
- Each ray prints about 60 mm long, past the edge of a 4 inch protractor. With a larger one, extend the ray with a ruler.
- The angles are turned every way on the page, so students must turn the protractor or the paper.
- A printed protractor has two scales. The key names the one to read, as in 85° (inner scale).
Questions and answers
How do you measure an angle with a protractor?
Put the center of the protractor on the vertex and line up one ray with 0. Follow the scale that starts at 0 on that ray, and read it where the other ray crosses. The Read a printed protractor task practices exactly that step.
Is this an angles worksheet for grade 4?
Yes. Common Core standard 4.MD.6 asks grade 4 students to measure angles in whole-number degrees using a protractor and to sketch angles of a given measure. Standard 4.MD.7 treats angle measure as additive: the Two parts make a whole task.
How close does a measurement have to be?
The key carries the note Measuring and drawing: allow 2° either way. For Draw an angle on a ray the key shows the finished angle. Shrinking the page to fit the paper changes no angle.