题目内容
能简算的要简算:
(1)(25×4-12.5)×8
(2)
÷6+
×
(3)
×0.75+
×
(4)4-[3.75×(1.2-
)+
].
(1)(25×4-12.5)×8
(2)
| 8 |
| 20 |
| 1 |
| 6 |
| 2 |
| 20 |
(3)
| 5 |
| 6 |
| 3 |
| 4 |
| 1 |
| 6 |
(4)4-[3.75×(1.2-
| 1 |
| 3 |
| 3 |
| 4 |
(1))(25×4-12.5)×8,
=(100-12.5)×8,
=100×8-12.5×8,
=800-100,
=700;
(2)
÷6+
×
,
=(
+
)×
,
=
×
,
=
;
(3)
×0.75+
×
,
=0.75×(
+
),
=0.75×1,
=0.75;
(4)4-[3.75×(1.2-
)+
],
=4-[3.75×
+
],
=4-[3.25+
],
=4-4,
=0.
=(100-12.5)×8,
=100×8-12.5×8,
=800-100,
=700;
(2)
| 8 |
| 20 |
| 1 |
| 6 |
| 2 |
| 20 |
=(
| 8 |
| 20 |
| 2 |
| 20 |
| 1 |
| 6 |
=
| 1 |
| 2 |
| 1 |
| 6 |
=
| 1 |
| 12 |
(3)
| 5 |
| 6 |
| 3 |
| 4 |
| 1 |
| 6 |
=0.75×(
| 5 |
| 6 |
| 1 |
| 6 |
=0.75×1,
=0.75;
(4)4-[3.75×(1.2-
| 1 |
| 3 |
| 3 |
| 4 |
=4-[3.75×
| 13 |
| 15 |
| 3 |
| 4 |
=4-[3.25+
| 3 |
| 4 |
=4-4,
=0.
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