29×19+19×69+38的简便运算怎么做?

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29×19+19×69+38的简便运算怎么做?29×19+19×69+38的简便运算怎么做?29×19+19×69+38的简便运算怎么做?29×19+19×69+38=29×19+19×69+19×2

29×19+19×69+38的简便运算怎么做?
29×19+19×69+38的简便运算怎么做?

29×19+19×69+38的简便运算怎么做?
29×19+19×69+38
=29×19+19×69+19×2
=(29+69+2)×19
=100×19
=1900