题目内容
计算:
(1)-13+(+48)-(-5)
(2)(-56)÷(-14+7)+(-3)×2
(3)(
+
-
)×(-36)
(4)-14+
×[3-(-3)2].
(1)-13+(+48)-(-5)
(2)(-56)÷(-14+7)+(-3)×2
(3)(
| 1 |
| 6 |
| 5 |
| 9 |
| 7 |
| 12 |
(4)-14+
| 1 |
| 6 |
(1)原式=-13+48+5=-13+53=40;
(2)原式=-56÷(-7)+(-3)×2=8-6=2;
(3)原式=
×(-36)+
×(-36)-
×(-36)=-6-20+21=-5;
(4)原式=-1+
×(3-9)=-1+
×(-6)=-1-1=-2.
(2)原式=-56÷(-7)+(-3)×2=8-6=2;
(3)原式=
| 1 |
| 6 |
| 5 |
| 9 |
| 7 |
| 12 |
(4)原式=-1+
| 1 |
| 6 |
| 1 |
| 6 |
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