计算:(1)3.4-1.8+7.6 (2)3737÷37-11 (3)12.5×25%×32 (4)713×59+513×29 (5)[1-(
计算:(1)3.4-1.8+7.6(2)3737÷37-11(3)12.5×25%×32(4)713×59+513×29(5)[1-(12+13)]×24(6)32.5×...
计算:(1)3.4-1.8+7.6 (2)3737÷37-11 (3)12.5×25%×32 (4)713×59+513×29 (5)[1-(12+13)]×24 (6)32.5×9.8+6.75×98.
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推荐于2016-05-06
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(1)3.4-1.8+7.6
=3.4+7.6-1.8
=11-1.8
=9.2;
(2)3737÷37-11
=101-11
=90;
(3)12.5×25%×32
=12.5×25%×(4×8)
=(12.5×8)×(25%×4)
=100×1
=100;
(4)
×
+
×
=
×
+
×
=
×(
+
)
=
×1
=
;
(5)[1-(
+
)]×24
=[1-
]×24
=
×24
=4;
(6)32.5×9.8+6.75×98
=32.5×9.8+67.5×9.8
=(32.5+67.5)×9.8
=100×9.8
=980.
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