
脱式计算:(能简算要简算) 0.4×5÷0.4×5 8×25×125×40
脱式计算:(能简算要简算)0.4×5÷0.4×58×25×125×40(14+1415)-1415....
脱式计算:(能简算要简算) 0.4×5÷0.4×5 8×25×125×40 (14+1415)-1415.
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(1)0.4×5÷0.4×5,
=2÷0.4×5,
=5×5,
=25;
(2)8×25×125×40,
=(8×125)×(25×40),
=1000×1000,
=1000000;
(3)(
+
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,
=
+
-
,
=
+(
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),
=
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=
.
=2÷0.4×5,
=5×5,
=25;
(2)8×25×125×40,
=(8×125)×(25×40),
=1000×1000,
=1000000;
(3)(
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