Question

207×107减7×265的简便运算

Answer 1

207×107减7×265
=207x(100+7)-7x265
=207x100+207x7-7x265
=20700-7x(265-207)
=20700-7x58
=20700-406
=20294

Answer 2

解: 207×107-7×265
=207*(100+7)-7*265
=20700+7*207-7*265
=20700-7*(265-207)
=20700-7*58
=20700-406
=20294