
脱式计算.(1)375+450÷18×25(2)8.5×3-5.85÷1.3(3)12-
脱式计算.(1)375+450÷18×25(2)8.5×3-5.85÷1.3(3)12-(34-35)÷34(4)(79+13)÷815×310....
脱式计算.(1)375+450÷18×25(2)8.5×3-5.85÷1.3(3)12-(34-35)÷34 (4)(79+13)÷815×310.
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(1)375+450÷18×25,
=375+25×25,
=375+625,
=1000;
(2)8.5×3-5.85÷1.3,
=25.5-4.5,
=21;
(3)
-(
-
)÷
,
=
-
×
,
=
-
,
=
;
(4)(
+
)÷
×
,
=
×
×
,
=
.
=375+25×25,
=375+625,
=1000;
(2)8.5×3-5.85÷1.3,
=25.5-4.5,
=21;
(3)
1 |
2 |
3 |
4 |
3 |
5 |
3 |
4 |
=
1 |
2 |
3 |
20 |
4 |
3 |
=
1 |
2 |
1 |
5 |
=
3 |
10 |
(4)(
7 |
9 |
1 |
3 |
8 |
15 |
3 |
10 |
=
10 |
9 |
15 |
8 |
3 |
10 |
=
5 |
8 |
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