3.42乘0.25脱式简便计算

=（3.42÷4）×（4×0.25）=3.42÷4 =0.855 所以，可以通过上面的简便计算过程，得到答案是0.855。

3.42*0.25=3.42/4=1.71/2=0.855

3.42*0.25=（3.42）

3.42×0.25
=1.71×（2×0.25）
=1.71×0.5
=0.855本回答被网友采纳

3.42乘0.25脱式简便计算
第一种方法:
3.42×0.25
=0.855×4×0.25
=0.855×(4×0.25)
=0.855×1
=0.855
第二种方法:
3.42×0.25
=3.42×(0.2+0.05)
=3.42×0.2+3.42×0.05
=0.684+0.171
=0.855
第三种方法:
3.42×0.25
=(3+0.4+0.02)×0.25
=3×0.25+0.4×0.25+0.02×0.25
=0.75+0.1+0.005
=0.85+0.005
=0.855
第四种方法:
3.42×0.25
=342×25÷10000
=85.5×4×25÷10000
=85.5×(4×25)÷10000
=85.5×100÷10000
=8550÷10000
=0.855
第五种方法:
3.42×0.25
=342×25÷10000
=342×(20+5)÷10000
=342×20+342×5÷10000
=6840+1710÷10000
=8550÷10000
=0.855
第六种方法:
3.42×0.25
=342×25÷10000
=(300+40+2)×25÷10000
=300×25+40×25+2×25÷10000
=7500+1000+50÷10000
=8500+50÷10000
=8550÷10000
=0.855