Problem 5 answer key
Fence the Wheat Farm
Grade 3 · Geometry · Measurement
MJ 3.6 · C2 · W2
Standard challenge · Moderate workload
About 3–9 minutes
Problem 5: Fence the Wheat Farm
1. Find the area
Multiply the length by the width:
8 × 5 = 40
The farm has an area of 40 square blocks.
2. Find the perimeter
Add the lengths of all four sides:
8 + 5 + 8 + 5 = 26
The distance around the farm is 26 blocks. The answer uses blocks of length, not square blocks, because perimeter measures distance around an edge.