Mathematics · Grades 3–5
Geometry · Formula sheet
Rules, conditions and small examples in one printable reference.
Remember this
Perimeter of a square
A square has four equal sides. Perimeter uses linear units.
P = 4s
4 × 82 = 328
Find a missing rectangle side
Use consistent length and area units.
width = area ÷ length
648 ÷ 27 = 24
Volume of two joined boxes
Add the volumes only when the boxes do not overlap.
V = l₁w₁h₁ + l₂w₂h₂
336 + 24 = 360
Further reading and review references
These are reference links, not copied exercises, institutional endorsement or proof of independent review.
Learning preview · teacher review required. Grade bands are approximate, not official curriculum alignment.