
计算:(1)312+(?12)?(?13)+223(2)(-5)×6+(-125)÷(-5)(3)1+(-2)+|-2-3|-5(4)(23?14?38+
计算:(1)312+(?12)?(?13)+223(2)(-5)×6+(-125)÷(-5)(3)1+(-2)+|-2-3|-5(4)(23?14?38+524)×(?4...
计算:(1)312+(?12)?(?13)+223(2)(-5)×6+(-125)÷(-5)(3)1+(-2)+|-2-3|-5(4)(23?14?38+524)×(?48)(5)8+2×32-(-2×3)2(6)?12012×[(?2)5?32?514÷(?17)]?2.5.
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(1)原式=3
-
+
+2
=3+3=6;
(2)原式=-30+25=-5;
(3)原式=1-2+5-5=-1;
(4)原式=-32+12+18-10=-42+30=-12;
(5)原式=8+18-36=-10;
(6)原式=-1×(-32-9+2.5)-2.5=32+9-2.5-2.5=36.
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(2)原式=-30+25=-5;
(3)原式=1-2+5-5=-1;
(4)原式=-32+12+18-10=-42+30=-12;
(5)原式=8+18-36=-10;
(6)原式=-1×(-32-9+2.5)-2.5=32+9-2.5-2.5=36.
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