A-A+
能简算的要简算.1011×113×13×11(45+310)×1031349×21+28×1
问题详情
参考答案
①1011×113×13×11,
=(1011×11)×(113×13),
=10×1,
=10;
②(45+310)×103,
=45×103+310×103,
=83+1,
=323;
③1349×21+28×1349,
=(21+28)×1349,
=49×1349,
=13;
④45-45×56,
=45-23,
=215;
⑤59×34+59×14,
=(34+14)×59,
=1×59,
=59;
⑥(34+58)×32,
=34×32+58×32,
=24+20,
=44;
⑦54×18×16,
=54×(18×16),
=54×2,
=52;
⑧15+29×310,
=15+115,
=415;
⑨72×571,
=(71+1)×571,
=71×571+571,
=5+571,
=5571.
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