
(1)-12012-[5×(-2)-(-4)2÷(-8)](2)(-72)×(34?76+1112?1324
(1)-12012-[5×(-2)-(-4)2÷(-8)](2)(-72)×(34?76+1112?1324)...
(1)-12012-[5×(-2)-(-4)2÷(-8)](2)(-72)×(34?76+1112?1324)
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(1)原式=-1-[(-10)-16÷(-8)]
=-1-[(-10)+2]
=-1-(-8)
=7;
(2)原式=(-72)×
-(-72)×(
)+(-72)×
-(-72)×
=(-54)+84-66+39
=3.
=-1-[(-10)+2]
=-1-(-8)
=7;
(2)原式=(-72)×
3 |
4 |
7 |
6 |
11 |
12 |
13 |
24 |
=(-54)+84-66+39
=3.
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