计算123+234+345+456+567+678+789/12.3+23.4+34.5+45.6+56.7+67.8+78.9这是小学6年纪的奥塞题朋友门帮忙解答下

问题描述:

计算123+234+345+456+567+678+789/12.3+23.4+34.5+45.6+56.7+67.8+78.9
这是小学6年纪的奥塞题朋友门帮忙解答下

把这些数先缩小十倍,然后小数和小数抵消了123+234+345+456+567+678+789/
=10*(12.3+23.4+34.5+45.6+56.7+67.8+78.9)/
(12.3+23.4+34.5+45.6+56.7+67.8+78.9)
=10

65

这么简单的题,分母提出10(乘法分配率小学是学的)
123+234+345+456+567+678+789/(12.3+23.4+34.5+45.6+56.7+67.8+78.9)
=10(12.3+23.4+34.5+45.6+56.7+67.8+78.9)/(12.3+23.4+34.5+45.6+56.7+67.8+78.9)
=10

123+234+345+456+567+678+789/(12.3+23.4+34.5+45.6+56.7+67.8+78.9)
=10(12.3+23.4+34.5+45.6+56.7+67.8+78.9)/(12.3+23.4+34.5+45.6+56.7+67.8+78.9)
=10