题目内容
计算:
(1)7
-5
-3
-6
+9
+2
(2)(-0.5)÷1
×(-11)
(3)-7×
+(-5)×(-
)-
(4)(
-
-
)×(-60)
(5)-32-
×[(-5)2×(-
)-240÷(-4)×
].
(1)7
| 3 |
| 4 |
| 4 |
| 11 |
| 1 |
| 4 |
| 7 |
| 11 |
| 1 |
| 4 |
| 1 |
| 4 |
(2)(-0.5)÷1
| 5 |
| 6 |
(3)-7×
| 5 |
| 4 |
| 5 |
| 4 |
| 2 |
| 5 |
(4)(
| 2 |
| 3 |
| 11 |
| 12 |
| 14 |
| 15 |
(5)-32-
| 1 |
| 3 |
| 3 |
| 5 |
| 1 |
| 4 |
(1)7
-5
-3
-6
+9
+2
=(7
-3
+9
+2
)-(5
+6
)
=16-12
=4;
(2)(-0.5)÷1
×(-11)
=
×
×(-11)
=-3;
(3)-7×
+(-5)×(-
)-
=(-7+5)×
-
=(-2)×
-
=-
-
=-2
;
(4)(
-
-
)×(-60)
=-
×60+
×60+
×60
=-40+55+56
=71;
(5)-32-
×[(-5)2×(-
)-240÷(-4)×
]
=-9-
×[25×(-
)+60×
]
=-9-
×[-15+15]
=-9-
×0
=-9-0
=-9.
| 3 |
| 4 |
| 4 |
| 11 |
| 1 |
| 4 |
| 7 |
| 11 |
| 1 |
| 4 |
| 1 |
| 4 |
=(7
| 3 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
| 4 |
| 11 |
| 7 |
| 11 |
=16-12
=4;
(2)(-0.5)÷1
| 5 |
| 6 |
=
| 1 |
| 2 |
| 6 |
| 11 |
=-3;
(3)-7×
| 5 |
| 4 |
| 5 |
| 4 |
| 2 |
| 5 |
=(-7+5)×
| 5 |
| 4 |
| 2 |
| 5 |
=(-2)×
| 5 |
| 4 |
| 2 |
| 5 |
=-
| 5 |
| 2 |
| 2 |
| 5 |
=-2
| 9 |
| 10 |
(4)(
| 2 |
| 3 |
| 11 |
| 12 |
| 14 |
| 15 |
=-
| 2 |
| 3 |
| 11 |
| 12 |
| 14 |
| 15 |
=-40+55+56
=71;
(5)-32-
| 1 |
| 3 |
| 3 |
| 5 |
| 1 |
| 4 |
=-9-
| 1 |
| 3 |
| 3 |
| 5 |
| 1 |
| 4 |
=-9-
| 1 |
| 3 |
=-9-
| 1 |
| 3 |
=-9-0
=-9.
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