计算(1)-20+(-14)-(-18)-13; (2)?3...
计算(1)-20+(-14)-(-18)-13;(2)?33?|?1|?(?1)2011+12;(3)(?34?59+712)÷136(4)?12?[137+(?12)÷...
计算(1)-20+(-14)-(-18)-13; (2)?33?|?1|?(?1)2011+12;(3)(?34?59+712)÷136(4)?12?[137+(?12)÷6]2×(?34)3.
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(1)-20+(-14)-(-18)-13
=-20+(-14)+18+(-13)
=-47+18
=-29;
(2)?33?|?1|?(?1)2011+
=-27-1-(-1)+
=-27+
=-26
;
(3)(?
?
+
)÷
=(?
?
+
)×36
=-
×36-
×36+
×36
=-27-20+21
=-47+21
=-26;
(4)?12?[1
+(?12)÷6]2×(?
)3
=-1-(
-2)2×(-
)
=-1-
×(-
)
=-1+
=-
.
=-20+(-14)+18+(-13)
=-47+18
=-29;
(2)?33?|?1|?(?1)2011+
1 |
2 |
=-27-1-(-1)+
1 |
2 |
=-27+
1 |
2 |
=-26
1 |
2 |
(3)(?
3 |
4 |
5 |
9 |
7 |
12 |
1 |
36 |
=(?
3 |
4 |
5 |
9 |
7 |
12 |
=-
3 |
4 |
5 |
9 |
7 |
12 |
=-27-20+21
=-47+21
=-26;
(4)?12?[1
3 |
7 |
3 |
4 |
=-1-(
10 |
7 |
27 |
64 |
=-1-
16 |
49 |
27 |
64 |
=-1+
27 |
196 |
=-
169 |
196 |
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