计算:(1)8+(-14)-5-(-0.25)(2)(-1)÷(-423)×715(3)(-2)×3+(-24)÷3(4)(12-56-35
计算:(1)8+(-14)-5-(-0.25)(2)(-1)÷(-423)×715(3)(-2)×3+(-24)÷3(4)(12-56-35)×(-30)(5)312-|...
计算:(1)8+(-14)-5-(-0.25)(2)(-1)÷(-423)×715(3)(-2)×3+(-24)÷3(4)(12-56-35)×(-30)(5)312-|-4.5×(-2)2|(6)-13-(1+0.5)×13÷(-4)
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(1)原式=8+(-
)+(-5)+
=8+(-5)+[(-
)+
]=3.
(2)原式=(-1)×(-
)×
=
.
(3)原式=-6+(-24)×
=(-6)+(-8)=-14.
(4)原式=
×(-30)+(-
)×(-30)+(-
)×(-30)=-15+(+25)+(+18)=28.
(5)原式=3
-|-4.5×4|=3
-18=-14
.
(6)原式=-1-1.5×
×(-
)=-1-(-
)=-1+
=-
.
1 |
4 |
1 |
4 |
1 |
4 |
1 |
4 |
(2)原式=(-1)×(-
3 |
14 |
7 |
15 |
1 |
10 |
(3)原式=-6+(-24)×
1 |
3 |
(4)原式=
1 |
2 |
5 |
6 |
3 |
5 |
(5)原式=3
1 |
2 |
1 |
2 |
1 |
2 |
(6)原式=-1-1.5×
1 |
3 |
1 |
4 |
1 |
8 |
1 |
8 |
7 |
8 |
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