1.
13.91×8+6.09÷0.125 (÷0.125就是×8)
=13.91×8+6.09×8
=(13.91+6.09)×8
=20×8
=160
2.先说一句,题应为“2.93乘5.4+29.3乘0.46”吧。
2.93×5.4+29.3×0.46
=29.3×0.54+29.3×0.46
=29.3×(0.54+0.46)
=29.3
1.
13.91*8-6.09/0.125
=13.91*8+6.09*8
=(13.91+6.09)*8
=20*8
=160
因为1/0.125=8
2.是乘以0.46吧,不然就不简便了
2.93*5.4+29.3*0.46
=2.93*5.4+2.93*4.6
=2.93+(5.4+4.6)
=2.93*10
=29.3
呵呵,应该是这样吧
解:
(1):原式=13.91*8+6.09*8=(13.91+6.09)*8=20*8=160;
(2):原式=2.93*5.4+(2.93*10)*0.46=2.93*(5.4+4.6)=2.93*10=29.3:
完毕啦!
1.
13.91×8+6.09÷0.125 (÷0.125就是×8)
=13.91×8+6.09×8
=(13.91+6.09)×8
=20×8
=160
2.2.93×5.4+29.3×0.46
=29.3×0.54+29.3×0.46
=29.3×(0.54+0.46)
=29.3
五年级上册简便计算