0.75+0.25x8.4怎么简便计算？

0.75+0.25x8.4怎么简便计算?
0.25+0点七五等于一一×8点四等于8.4。

0.25×8.4用简便方法计算,
=0.25x4x21.=1x2.1 =2.1

o.25x8.4的简便方法计算是怎么写的
=8.4÷4=2.1

0.25脳8.4用简便方法计算
0.25脳8.4 =0.25*4*2.1 =1*2.1 =2.1

0.25×8.4用简便方法计算,怎么做
学了除法的用这个，同学 0.25=1\/4（四分之一）1\/4×8.4 =8.4÷4 =2.1 没学除法的可用这个 8.4=8+0.4 0.25×8.4 =0.25×8+0.25×0.4 =2+0.1 =2.1 还满意吗 参考资料：本人的智商

1.6x0.25+0.84x2.5用简便方法计算
回答：0.16·2.5+0.84·0.25

0.25乘八点四怎样简便计算
0.25×8.4 =0.25×(8+0.4)=0.25×8+0.25×0.4 =2+0.1 =2.1

0.25x8.4x4简便计算
0.25×8.4×4 =(0.25×4)×8.4 =1×8.4 =8.4

7.5×0.84+8.4×0.25的简便方法
解7.5×0.84+8.4×0.25 =0.75×8.4+8.4×0.25 =8.4×(0.75+0.25)=8.4×1 =8.4

0.888x0.4+0.222X8.4简便计算一
0.888x0.4+0.222X8.4 ＝0.888x0.4+0.222×4×2.1 ＝0.888x0.4+0.888×2.1 ＝0.888x（0.4+2.1）＝0.888×2.5 ＝2.22