题目内容
计算:
(1)(-1.5)-(-9.4)-(+3.6)+(-4.3)-(+5.2);
(2)0-(+
)-(-
)-(-
)-(+
);
(3)0-(-2.75)-(+0.71)-(-4);
(4)(-3
)-(-2
)-(-1
)-(+1.75).
(1)(-1.5)-(-9.4)-(+3.6)+(-4.3)-(+5.2);
(2)0-(+
(3)0-(-2.75)-(+0.71)-(-4);
(4)(-3
解:(1)原式=-1.5-3.6-4.3-5.2+9.4=-5.2;
(2)原式=-
;
(3)原式=2.75+4-0.71=6.04;
(4)原式=-3
=-2+1=-1。
(2)原式=-
(3)原式=2.75+4-0.71=6.04;
(4)原式=-3
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