计算下面各题.(1)1475-16×25 (2)56÷512×415 (3)2.87+5.6-0.87+4.4 (4)44-24×512 (5
计算下面各题.(1)1475-16×25(2)56÷512×415(3)2.87+5.6-0.87+4.4(4)44-24×512(5)4.2÷7÷0.6(6)910-(...
计算下面各题.(1)1475-16×25 (2)56÷512×415 (3)2.87+5.6-0.87+4.4 (4)44-24×512 (5)4.2÷7÷0.6 (6)910-(14+720)÷34.
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(1)1475-16×25,
=1475-400,
=1075;
(2)
÷
×
,
=2×
,
=
;
(3)2.87+5.6-0.87+4.4,
=(2.87-0.87)+(5.6+4.4),
=2+10,
=12;
(4)44-24×
,
=44-10,
=34;
(5)4.2÷7÷0.6,
=0.6÷0.6,
=1;
(6)
-(
+
)÷
,
=
-
÷
,
=
-
,
=
.
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