
计算下列各题(1)-8-(-17)(2)(-3)-4-(-9)(3)[?13×(?12)+(?19)×32]×(?12)(4)(?0.125)×(?
计算下列各题(1)-8-(-17)(2)(-3)-4-(-9)(3)[?13×(?12)+(?19)×32]×(?12)(4)(?0.125)×(?47)×(?8)×7....
计算下列各题(1)-8-(-17)(2)(-3)-4-(-9)(3)[?13×(?12)+(?19)×32]×(?12)(4)(?0.125)×(?47)×(?8)×7.
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(1)-8-(-17)
=-8+17
=9;
(2)(-3)-4-(-9)
=-3-4+9
=2;
(3)[?
×(?
)+(?
)×
]×(?
)
=(
-
)×(-
)
=0;
(4)(?0.125)×(?
)×(?8)×7
=-0.125×8×
×7
=-4.
=-8+17
=9;
(2)(-3)-4-(-9)
=-3-4+9
=2;
(3)[?
1 |
3 |
1 |
2 |
1 |
9 |
3 |
2 |
1 |
2 |
=(
1 |
6 |
1 |
6 |
1 |
2 |
=0;
(4)(?0.125)×(?
4 |
7 |
=-0.125×8×
4 |
7 |
=-4.
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