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66× 15+22×55, how to use simple operation?
This is a simple operation content of mathematics in the fourth grade of primary school. This problem should be solved by multiplying the distribution rate. The specific solution process is as follows:

66× 15+22×55

=22×3× 15+22×55

=22×45+22×55

=22×(45+55)

=22× 100

=2200

I hope my answer is helpful to you!