题目内容
灵活计算.
|
| (
| 12.5×0.32×25. |
(1)
×
+
×
,
=
×(
+
),
=
×1,
=
;
(2)
×0.375+
÷
,
=
×
+
×
,
=
×(
+
),
=
×2,
=
;
(3)(
-
)×54,
=
×54-
×54,
=9-5,
=4;
(4)12.5×0.32×25,
=12.5×8×0.04×25,
=12.5×8×(0.04×25),
=100×1,
=100.
| 7 |
| 13 |
| 3 |
| 4 |
| 3 |
| 4 |
| 6 |
| 13 |
=
| 3 |
| 4 |
| 6 |
| 13 |
| 7 |
| 13 |
=
| 3 |
| 4 |
=
| 3 |
| 4 |
(2)
| 7 |
| 8 |
| 3 |
| 8 |
| 8 |
| 9 |
=
| 7 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
| 9 |
| 8 |
=
| 3 |
| 8 |
| 7 |
| 8 |
| 9 |
| 8 |
=
| 3 |
| 8 |
=
| 3 |
| 4 |
(3)(
| 1 |
| 6 |
| 5 |
| 54 |
=
| 1 |
| 6 |
| 5 |
| 54 |
=9-5,
=4;
(4)12.5×0.32×25,
=12.5×8×0.04×25,
=12.5×8×(0.04×25),
=100×1,
=100.
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