题目内容
灵活计算(能简便的要用简便方法计算).
| 1.25×32×25 |
| (
|
|
(1)1.25×32×25,
=1.25×8×4×25,
=(1.25×8)×(4×25),
=10×100,
=1000;
(2)
-
÷3+
,
=
-
+
,
=
+
,
=
;
(3)(
+
)×30,
=
×30+
×30,
=6+5,
=11;
(4)
÷(
-
)+
,
=
÷
+
,
=3+
,
=3
.
=1.25×8×4×25,
=(1.25×8)×(4×25),
=10×100,
=1000;
(2)
| 3 |
| 4 |
| 3 |
| 4 |
| 9 |
| 25 |
=
| 3 |
| 4 |
| 1 |
| 4 |
| 9 |
| 25 |
=
| 1 |
| 2 |
| 9 |
| 25 |
=
| 43 |
| 50 |
(3)(
| 1 |
| 5 |
| 1 |
| 6 |
=
| 1 |
| 5 |
| 1 |
| 6 |
=6+5,
=11;
(4)
| 2 |
| 5 |
| 4 |
| 5 |
| 2 |
| 3 |
| 3 |
| 4 |
=
| 2 |
| 5 |
| 2 |
| 15 |
| 3 |
| 4 |
=3+
| 3 |
| 4 |
=3
| 3 |
| 4 |
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