问题
解答题
脱式计算.(友情提醒:有的可以简算哦)
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答案
(1)4000-3456÷32×5,
=4000-108×5,
=4000-540,
=3460;
(2)3.68-3.6×0.2+0.18,
=3.68-0.72+0.18,
=2.96+0.18,
=3.14;
(3)48×9.9+48×0.1,
=48×(9.9+0.1),
=48×10,
=480;
(4)(1-
)÷0.25×4,3 4
=
÷0.25×4,1 4
=1×4,
=4;
(5)45×
+54×0.25+25%,1 4
=(45+54+1)×0.25,
=100×0.25,
=25;
(6)2÷[
+(7 12
-5 6
)],5 12
=2÷[
+7 12
-5 6
],5 12
=2÷[
-7 12
+5 12
].5 6
=2÷[
+1 6
],5 6
=2÷1,
=2.