题目内容
计算:
(1)-0.5+(-15)-(-17)-|-12|;
(2)[-22+(-2)3]-(-2)×(-3);
(3)(
-3+
-
)÷(-
);
(4)-1.6÷[(-
)2×(-3)3-22];
(5)-14+[1-(1-0.5×2)]÷|2-(-3)2|;
(6)[(-3)2-22-(-5)2]×(
÷
)×(-2)4.
(1)-0.5+(-15)-(-17)-|-12|;
(2)[-22+(-2)3]-(-2)×(-3);
(3)(
1 |
2 |
5 |
6 |
7 |
12 |
1 |
36 |
(4)-1.6÷[(-
2 |
3 |
(5)-14+[1-(1-0.5×2)]÷|2-(-3)2|;
(6)[(-3)2-22-(-5)2]×(
5 |
6 |
4 |
9 |
(1)原式=-0.5-15+17-12
=-27.5+17
=-10.5;
(2)原式=(-4-8)-6
=-12-6
=-18;
(3)原式=-18+108-30+21
=81;
(4)原式=-1.6÷[
×(-27)-4]
=-1.6÷(-16)
=0.1;
(5)原式=-1+[1-(1-1)]÷7
=-1+
=-
;
(6)原式=(9-4-25)×
×
×16
=(-20)×
×
×16
=-600.
=-27.5+17
=-10.5;
(2)原式=(-4-8)-6
=-12-6
=-18;
(3)原式=-18+108-30+21
=81;
(4)原式=-1.6÷[
4 |
9 |
=-1.6÷(-16)
=0.1;
(5)原式=-1+[1-(1-1)]÷7
=-1+
1 |
7 |
=-
6 |
7 |
(6)原式=(9-4-25)×
5 |
6 |
9 |
4 |
=(-20)×
5 |
6 |
9 |
4 |
=-600.

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