题目内容
用递等式计算.
(1)(3618÷18-145)×20
(2)16.8-45÷0.9×0.16
(3)
×
+
÷22
(4)96÷[(
-
)×2.4+
].
(1)(3618÷18-145)×20
(2)16.8-45÷0.9×0.16
(3)
| 4 |
| 9 |
| 3 |
| 20 |
| 11 |
| 15 |
(4)96÷[(
| 5 |
| 6 |
| 3 |
| 4 |
| 3 |
| 5 |
(1)(3618÷18-145)×20,
=(201-145)×20,
=56×20,
=1120
(2)16.8-45÷0.9×0.16,
=16.8-50×0.16,
=16.8-8,
=8.8;
(3)
×
+
÷22,
=
+
÷22,
=
+
,
=
;
(4)96÷[(
-
)×2.4+
],
=96÷[
×2.4+
],
=96÷[
+
],
=96÷
,
=120.
=(201-145)×20,
=56×20,
=1120
(2)16.8-45÷0.9×0.16,
=16.8-50×0.16,
=16.8-8,
=8.8;
(3)
| 4 |
| 9 |
| 3 |
| 20 |
| 11 |
| 15 |
=
| 1 |
| 15 |
| 11 |
| 15 |
=
| 1 |
| 15 |
| 1 |
| 30 |
=
| 1 |
| 10 |
(4)96÷[(
| 5 |
| 6 |
| 3 |
| 4 |
| 3 |
| 5 |
=96÷[
| 1 |
| 12 |
| 3 |
| 5 |
=96÷[
| 1 |
| 5 |
| 3 |
| 5 |
=96÷
| 4 |
| 5 |
=120.
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