Partitioning Numbers
Partitioning means to separate into parts. We need a strong understanding of number sense and the structure of numbers to help us confidently partition numbers. Thinking strategically about partitioning numbers enables us to chose which other strategies we think are most efficient in solving a particular problem.
The great news is that I can partition numbers in an way I need to help me solve problems - sometimes, that means standard partitioning might be best (using place value) and at other times, non-standard partitioning is best (splitting the numbers in any way I like).