题目内容
计算下面各题(怎样简便怎样计算)
|
| 3.64÷4+4.36×25% | 25×1.25×32. |
(1)
×3.25+9
×3
,
=(
+9
)×3.25,
=10×3.25,
=32.5;
(2)
÷(
×
)-
,
=
÷
-
,
=
-
,
=
;
(3)3.64÷4+4.36×25%,
=3.64×
+4.36×
,
=(3.64+4.36)×
,
=8×
,
=2;
(4)25×1.25×32,
=25×1.25×8×4,
=(25×4)×(1.25×8),
=100×10,
=1000.
| 4 |
| 9 |
| 5 |
| 9 |
| 1 |
| 4 |
=(
| 4 |
| 9 |
| 5 |
| 9 |
=10×3.25,
=32.5;
(2)
| 4 |
| 5 |
| 5 |
| 6 |
| 3 |
| 5 |
| 1 |
| 2 |
=
| 4 |
| 5 |
| 1 |
| 2 |
| 1 |
| 2 |
=
| 8 |
| 5 |
| 1 |
| 2 |
=
| 11 |
| 10 |
(3)3.64÷4+4.36×25%,
=3.64×
| 1 |
| 4 |
| 1 |
| 4 |
=(3.64+4.36)×
| 1 |
| 4 |
=8×
| 1 |
| 4 |
=2;
(4)25×1.25×32,
=25×1.25×8×4,
=(25×4)×(1.25×8),
=100×10,
=1000.
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