用简便方法计算下面各题(1)445+214+65+114(2)234×37+274×37(3)4.3×11.8+86×0.91 &n...
用简便方法计算下面各题(1)445+214+65+114(2)234×37+274×37(3)4.3×11.8+86×0.91(4)7.46×36+74.6×6.4....
用简便方法计算下面各题(1)445+214+65+114(2)234×37+274×37(3)4.3×11.8+86×0.91 (4)7.46×36+74.6×6.4.
展开
峰爱祥2873
推荐于2016-11-18
·
TA获得超过347个赞
知道答主
回答量:297
采纳率:96%
帮助的人:53.7万
关注
(1)
+++,
=(
+
)+(
+
),
=10+8,
=18;
(2)
×
+
×
,
=(
+)×
,
=
×
,
=
;
(3)4.3×11.8+86×0.91,
=43×1.18+43×1.82,
=43×(1.18+1.82),
=43×3,
=129;
(4)7.46×36+74.6×6.4,
=74.6×3.6+74.6×6.4,
=74.6×(3.6+6.4),
=74.6×10,
=746.
收起
为你推荐: