题目内容
| 计算: (1)(
| (2)2÷[(
| (3)40%x+16=80. |
(1)(
×
+
)÷
=(
+
)÷
=
×
=1;
(2)2÷[(
+
)×
]
=2÷[
×
]
=2÷
=2×3
=6;
(3)40%x+16=80
40%x+16-16=80-16
40%x÷40%=64÷40%
x=160.
| 1 |
| 4 |
| 6 |
| 5 |
| 1 |
| 2 |
| 4 |
| 5 |
=(
| 3 |
| 10 |
| 1 |
| 2 |
| 4 |
| 5 |
=
| 4 |
| 5 |
| 5 |
| 4 |
=1;
(2)2÷[(
| 1 |
| 2 |
| 1 |
| 3 |
| 2 |
| 5 |
=2÷[
| 5 |
| 6 |
| 2 |
| 5 |
=2÷
| 1 |
| 3 |
=2×3
=6;
(3)40%x+16=80
40%x+16-16=80-16
40%x÷40%=64÷40%
x=160.
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