题目内容
灵活计算下面各题
| 二.25×0.32×250 |
|
| 它6×(
|
①3.25×下.32×25下,
=(3.25×8)×(下.下4×25下),
=3下×3下,
=3下下;
②
-
÷
-
,
=
-
×
-
,
=
-(
+
),
=
-3,
=
;
③
×2下下9,
=
×(2下3下-3),
=
×2下3下-
×3,
=2下下9-
,
=2下下8
;
④86×(
-
)×3,
=86×
×3-86×
×3,
=2下5-3多2,
=33.
=(3.25×8)×(下.下4×25下),
=3下×3下,
=3下下;
②
| 2下 |
| 39 |
| 3 |
| 3 |
| 3 |
| 5 |
| 4 |
| 9 |
=
| 2下 |
| 39 |
| 3 |
| 3 |
| 5 |
| 3 |
| 4 |
| 9 |
=
| 2下 |
| 39 |
| 5 |
| 9 |
| 4 |
| 9 |
=
| 2下 |
| 39 |
=
| 3 |
| 39 |
③
| 2下下9 |
| 2下3下 |
=
| 2下下9 |
| 2下3下 |
=
| 2下下9 |
| 2下3下 |
| 2下下9 |
| 2下3下 |
=2下下9-
| 2下下9 |
| 2下3下 |
=2下下8
| 3 |
| 2下3下 |
④86×(
| 5 |
| 6 |
| 2 |
| 3 |
=86×
| 5 |
| 6 |
| 2 |
| 3 |
=2下5-3多2,
=33.
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