Cubles

3rd grade geometry practice

Free 3rd grade geometry problems covering area by tiling and multiplying, perimeter of polygons, and quadrilaterals. Instant feedback, worked-out steps, and a fresh problem every time — no sign-up, and it works great on a phone.

// Cubles Brain Blocks: Geometry
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Questions

What geometry do 3rd grade students learn?

In 3rd grade, geometry covers area by tiling and multiplying, perimeter of polygons, and quadrilaterals. Cubles Brain Blocks lets students practice all of it free, one problem at a time, with worked-out steps.

Is this 3rd grade geometry practice free?

Yes — every problem is free with no sign-up and no ads, and a new one is generated each time so it never runs out.

Common Core standards covered
  • 3.G.A.1Understand that shapes in different categories may share attributes, and that the shared attributes can define a larger category (e.g., quadrilaterals). Recognize rhombuses, rectangles, and squares as examples of quadrilaterals.
  • 3.G.A.2Partition shapes into parts with equal areas. Express the area of each part as a unit fraction of the whole.
  • 3.MD.C.5Recognize area as an attribute of plane figures and understand concepts of area measurement; a unit square has one square unit of area.
  • 3.MD.C.6Measure areas by counting unit squares (square cm, square m, square in, square ft, and improvised units).
  • 3.MD.C.7Relate area to the operations of multiplication and addition: find the area of a rectangle by tiling and by multiplying side lengths; use area models for the distributive property; find areas of rectilinear figures by decomposing into non-overlapping rectangles.
  • 3.MD.D.8Solve real world and mathematical problems involving perimeters of polygons, including finding the perimeter given the side lengths, finding an unknown side length, and comparing rectangles with the same perimeter and different areas.
Practice by grade
Kindergarten1st grade2nd grade3rd grade4th grade5th grade6th grade7th grade8th grade
Practice by topic
Area of a triangleArea of a rectangleArea of a parallelogramArea of a trapezoidPerimeter practiceVolume of a rectangular prismSurface area practiceArea of a circleCircumference of a circleVolume of a cylinderVolume of a coneVolume of a spherePythagorean theorem practiceAngles practiceCoordinate plane practice2D shapes practice

Geometry you can hold

Cubles kits are geometry in your hands: nets, faces, edges and vertices that fold and click into a poseable 3D character. No scissors, no glue, about 15 minutes.

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