问题 解答题
(1)794-198.(2)68×25.(3)6756-193-207.(4)72×125.(5)97×360+3×360.
答案

(1)794-198,

=794-200+2,

=594+2,

=596;

(2)68×25,

=17×4×25,

=17×(4×25),

=17×100,

=1700;

(3)6756-193-207,

=6756-(193+207),

=6756-400,

=6356;

(4)72×125,

=9×8×125,

=9×(8×125),

=9×1000,

=9000;

(5)97×360+3×360,

=360×(97+3),

=360×100,

=36000.

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