5723-﹙723-189﹚+576-﹙276-211﹚的简便运算

问题描述:

5723-﹙723-189﹚+576-﹙276-211﹚的简便运算

(5723-723)+(189+211)+(576-276)
=5000+400+300
=5700

5723-﹙723-189﹚+576-﹙276-211﹚
= (5723-723)+(189+211﹚+(576-276)
= 5700

先去括号 5723-723+189+576-276+211=(5723-723)+(576-276)+(189+211)=5000+300+400=5700

5723-723+189+576-276+211
=5000+(189+211)+(576-276)
=5000+400+300
=5700

5723-﹙723-189﹚+576-﹙276-211﹚
=5723-723+189+576-276+211
=(5723-723)+(576-276)+(189+211)
=5000+300+400
=5700