Why parents choose SplashLearn for their third graders?

  • Personalised Learning

    Intelligently adapts to the way each child learns

  • Fun Rewards

    Get coins for each correct answer and redeem coins for virtual pets

  • Actionable Reports

    Monitor progress with iPhone app, weekly emails and detailed dashboards


Given Perimeter: Find Missing Side Lengths

- Grade 3 Math

Find the missing side lengths in polygons, given their perimeter. For regular polygons, this operation can be related to division. For example, if a regular hexagon has a perimeter of 36, the side length is 36 ÷ 6 = 6.

Common Core Alignment

3.MD.8Solve real world and mathematical problems involving perimeters of polygons, including finding the perimeter given the side lengths, finding an unknown side length, and exhibiting rectangles with the same perimeter and different areas or with the same area and different perimeters.