
用递等式计算.(1)(3618÷18-145)×20(2)16.8-45÷0.9×0.16(3)49×320+111
用递等式计算.(1)(3618÷18-145)×20(2)16.8-45÷0.9×0.16(3)49×320+1115÷22(4)96÷[(56-34)×2.4+35]....
用递等式计算.(1)(3618÷18-145)×20(2)16.8-45÷0.9×0.16(3)49×320+1115÷22(4)96÷[(56-34)×2.4+35].
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(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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