WALT: find and use a scale factor
S2S:count the squares for the length (if not given)
find a common factor (scale factor)
dividing or multiplying (smaller or larger shape?)
Get your brains ready for learning by doing this arithmetic quiz:
Watch this video on what a scale factor is, how to find and use the scale factor and how to find missing lengths on a shape using scale factor.
Now use those skills on this worksheet: