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脱式计算,能简便的简便.4.2-1.38+5.8-3.620.125×0.25×322÷23−23÷2335×2.65−335+335×8.35

题目详情
脱式计算,能简便的简便.
4.2-1.38+5.8-3.62 0.125×0.25×32
2÷
2
3
2
3
÷2
3
3
5
×2.65−3
3
5
+3
3
5
×8.35
▼优质解答
答案和解析
(1)4.2-1.38+5.8-3.62,
=4.2+5.8-(1.38+3.62),
=10-5,
=5;

(2)0.125×0.25×32,
=(0.125×8)×(0.25×4),
=1×1,
=1;

(3)2÷
2
3
2
3
÷2,
=2×
3
2
2
3
×
1
2

=3
1
3

=2
2
3


(4)3
3
5
×2.65−3
3
5
+3
3
5
×8.35,
=3.6×(2.65+8.35-1),
=3.6×10,
=36.