题目内容
计算
(1)(-17)+(-13)-18;
(2)(-2)÷
×(-5);
(3)(
+
-
)×18
(4)-10+8÷(-2)2-(-2)2×(-3)
(1)(-17)+(-13)-18;
(2)(-2)÷
| 1 |
| 3 |
(3)(
| 1 |
| 3 |
| 1 |
| 6 |
| 1 |
| 18 |
(4)-10+8÷(-2)2-(-2)2×(-3)
(1)原式=-(17+13+18)=-48;
(2)原式=(-2)×3×(-5)=30;
(3)原式=6+3-1=8;
(4)原式=-10+8÷4-4×(-3)
=-10+2+12
=4.
(2)原式=(-2)×3×(-5)=30;
(3)原式=6+3-1=8;
(4)原式=-10+8÷4-4×(-3)
=-10+2+12
=4.
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