题目内容
计算:
(1)-3-(-6)+(-4)
(2)(-
)+(+
)-(-
)+(-1
)
(3)3×(-4)+(-28)÷7
(4)(
-
+
)×(-36)
(5)23-6÷3×
(6)-12-(1+0.5)×
÷(-4).
(1)-3-(-6)+(-4)
(2)(-
| 1 |
| 3 |
| 2 |
| 5 |
| 3 |
| 5 |
| 2 |
| 3 |
(3)3×(-4)+(-28)÷7
(4)(
| 1 |
| 2 |
| 5 |
| 9 |
| 7 |
| 12 |
(5)23-6÷3×
| 1 |
| 3 |
(6)-12-(1+0.5)×
| 1 |
| 3 |
(1)原式=-3+6-4=-7+6=-1;
(2)原式=(-
-1
)+(
+
)=-2+1=-1;
(3)原式=-12-4=-16;
(4)原式=-18+20-21=-19;
(5)原式=8-2×
=8-
=7
;
(6)原式=-1-
×
×(-
)=-1+
=-
.
(2)原式=(-
| 1 |
| 3 |
| 2 |
| 3 |
| 2 |
| 5 |
| 3 |
| 5 |
(3)原式=-12-4=-16;
(4)原式=-18+20-21=-19;
(5)原式=8-2×
| 1 |
| 3 |
| 2 |
| 3 |
| 1 |
| 3 |
(6)原式=-1-
| 3 |
| 2 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 8 |
| 7 |
| 8 |
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