Grade 4 - Progress in Mathematics

Area 
 9 sq cm

Perimeter 
12 cm

Visualize the facts of the problem.

Use a drawing or model to solve each problem. First Try

1. A shape made up of tiles that are
   1 cm square has an area of
   9 sq cm and a perimeter of
   12 cm. Describe the shape.

Facts:

Question: What is the shape? Second Try

How should you arrange

1-sq-cm tiles to make a shape

that has an area of 9 sq cm and

a perimeter of 12 cm?

A
9 sq cm

P
18 cm

A
9 sq cm

P
16 cm

2. How many different rectangles
   can you draw that have a perimeter
   of 20 units? What is the area of
   each rectangle?


3. The volume of a rectangular prism
   is 24 cubic centimeters. The flat surface
   at the bottom of the prism is 2 cm by 4 cm.
   How tall is the prism?


4. How many triangles can you find
   in the puzzle on the right?

6 cm 6 cm

3 cm 3 cm

3 cm

3 cm

5. What is the area of the
   figure at the right?

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