求解小学生简便运算（要有过程）
求解小学生简便运算（要有过程）
1.=33333*1234-11111*3702=11111*(3*1234-3702)=0
2.9876*9876-(9876*9876-1)=1
3.把(2.15+5.17)看成一个整体a,=(a+3.62)*(a+8.5)-(3.62+8.5+a)*a=3.62*8.5=30.77
1、
3333.3×12340-111110×370.2
=（3333.3*10）（1234/10）-（11111/10）（3702*10）
=33333*12340-11111*37020
=11111*3*12340-11111*37020
=11111*37020-11111*37020
=0
2、
9876×9876-9875×9877
=9876*9876-（9876-1）（9876+1）
=9876*9876-（9876*9876-1）
=9876*9876-9876*9876+1
=1
3、
(2.15+5.17+3.62)×(5.17+2.15+8.5)-(3.62+2.15+8.5+5.17)×(2.5+5.17)
=［(2.15+5.17+3.62+8.5)-8.5）］×(5.17+2.15+8.5)-(3.62+2.15+8.5+5.17)×(2.5+5.17)
=(2.15+5.17+3.62+8.5)×(5.17+2.15+8.5)-8.5×(5.17+2.15+8.5)
-(3.62+2.15+8.5+5.17)×(2.5+5.17)
=(2.15+5.17+3.62+8.5)（5.17+2.15+8.5-2.5-5.17）-8.5×(5.17+2.15+8.5)
=(2.15+5.17+3.62+8.5)*8.5-8.5×(5.17+2.15+8.5)
=8.5（2.15+5.17+3.62+8.5-5.17-2.15-8.5）
=8.5*3.62
=30.77
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