问题
解答题
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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.