计算:(本题16分)
(1) 7-(-3)+(-5)-|-8|
(2)(-8)÷(-4)-(-3)3×(-1)
(3)
;
(4)
.
计算:
(1)12﹣(﹣15)+(﹣23)
(2)3×

(3)﹣23÷8﹣
×(﹣2)2
(4)﹣6×
.
计算
(1)-9+12-3+8
(2)(-1
)+(-
)+(+
)-(+
)
(3)(-3
)÷2
÷(-3
)×(-0.75)
(4)-16-(1-0.5)×
×[2-(-3)2]
试题篮
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