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脱式计算.(能简算的要简算,并写出主要的简便过程)(1)3.58-2.36-(2.64-1.42)(2)(14+16−13)×12(3)3.6×118+8.4÷811(4)34÷[3.75×(1.2−15)].
题目详情
脱式计算.(能简算的要简算,并写出主要的简便过程)
(1)3.58-2.36-(2.64-1.42)
(2)(
+
−
)×12
(3)3.6×
+8.4÷
(4)
÷[3.75×(1.2−
)].
(1)3.58-2.36-(2.64-1.42)
(2)(
| 1 |
| 4 |
| 1 |
| 6 |
| 1 |
| 3 |
(3)3.6×
| 11 |
| 8 |
| 8 |
| 11 |
(4)
| 3 |
| 4 |
| 1 |
| 5 |
▼优质解答
答案和解析
(1)3.58-2.36-(2.64-1.42)
=3.58-2.36-2.64+1.42
=(3.58+1.42)-(2.36+2.64)
=5-5
=0;
(2)(
+
−
)×12
=
×12+
×12-
×12
=3+2-4
=1;
(3)3.6×
+8.4÷
=3.6×
+8.4×
=(3.6+8.4)×
=12×
=
;
(4)
÷[3.75×(1.2−
)]
=
÷[3.75×1]
=
÷3
=
.
=3.58-2.36-2.64+1.42
=(3.58+1.42)-(2.36+2.64)
=5-5
=0;
(2)(
| 1 |
| 4 |
| 1 |
| 6 |
| 1 |
| 3 |
=
| 1 |
| 4 |
| 1 |
| 6 |
| 1 |
| 3 |
=3+2-4
=1;
(3)3.6×
| 11 |
| 8 |
| 8 |
| 11 |
=3.6×
| 11 |
| 8 |
| 11 |
| 8 |
=(3.6+8.4)×
| 11 |
| 8 |
=12×
| 11 |
| 8 |
=
| 33 |
| 2 |
(4)
| 3 |
| 4 |
| 1 |
| 5 |
=
| 3 |
| 4 |
=
| 3 |
| 4 |
| 3 |
| 4 |
=
| 1 |
| 5 |
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