(1)180+(﹣10)
(2)9﹣(﹣5)
(3)(﹣1.9)+3.6+(﹣10.1)+1.4
(4)(﹣
)﹣(﹣
)﹣(+
)
(5)﹣0.6+1.8﹣5.4+4.2
(6)|﹣15|﹣(﹣2)﹣(﹣5)
计算:
(1)1
+2.25+(+3.625)+(-2
)+(-1.4)+(-3
);
(2)(-
+0.75-
)×(-36);
(3)[-
×(-
)+(-
)÷
]÷(-2)3;
(4)-12015-[-3×(2÷3)2+22]-
;
(5)x2y-3xy2+2yx2-xy2;
(6)5a2-[3a-2(a-3)+4a2].
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
()