The green rectangle is an enlargement of the blue rectangle.
What is the enlargement factor?
Write the scale of the blue rectangle to the green rectangle.
$\editable{}:\editable{}$:
A centimetre ruler is put on a picture of a bow.
The scale of the picture to the real bow is $1:2$1:2.
A centimetre ruler is put on a picture of a sea shell.
The scale of the picture to the real sea shell is $2:1$2:1.
This bee is next to a centimetre ruler. The scale of the picture to a real bee is $5:1$5:1.