The document discusses units of measurement in the metric system including kilometers, meters, centimeters and millimeters. It explains how to convert between these units by multiplying or dividing by powers of ten. It also defines perimeter as the distance around an object and area as the space inside an object. It provides formulas for calculating the area of squares, rectangles, triangles, trapezoids, and composite shapes made of multiple simple shapes.

2. Metric system
 The standard measurements for the metric system is:
km, m, ha, cm, mm, hm
 You convert measurements by dividing or multiplying
powers of ten.
Examples
1km / 1000= 1 meter 1000meters *1= 1km
1m / 100 =1cm 100cm*1=1m
1cm / 10=1mm 10mm*1=1cm

3. perimeter
 Perimeter is the distance around a object
 To find the perimeter you add up all the sides
Examples
1: The distance around a field 2: Fencing around your house 3: Picture
frames

4. Area
 Area is the space inside the object
 To change between units for area you multiply or divide by
powers of ten
Examples
1: Area of wall to put wallpaper/paint 2: Area of room to put
furnishings 3: Area of door to put pictures on
1kˇ2/1000000=1mˇ2 1000000mˇ2*1=1kˇ2
1mˇ2/10000=1cmˇ2 10000cmˇ2*1=1mˇ2
1cmˇ2/100=1mmˇ2 100mmˇ2*1=1cmˇ2

5. Area of shapes
 To find the area for a square, rectangle, and
parallelogram, you do base times height
 To find the area of a triangle you do base times height
divided by 2
 To find the area of a trapezoid you add both bases( top
and bottom), then you divide the height by 2. Then you
multiply it.

6. Examples for Area of Shapes

7. Composite shapes
 Composite shapes are shapes with two or more simple
shapes
 To find the area of a composite shape you have to
separate the two or more shapes then find the area of
them. Then you add both answers together.

8. Composite Shapes Examples

9. THE END