计算:(1)(+325)+(-278)+(-3512)+(-118)+(+535)+(+5512)(2)(-6.5)×(-2)÷(-13)÷(-5)(3)(-5)×713+7×(-713)-12÷(-322)(4)229×(-112)3-(-1.2)2÷0.42(5)-22-(-3)3×(-1)4-(-1)5(6)[45-(79-1112+56)
计算:
(1)(+3)+(-2)+(-3)+(-1)+(+5)+(+5)
(2)(-6.5)×(-2)÷(-)÷(-5)
(3)(-5)×7+7×(-7)-12÷(-)
(4)2×(-1)3-(-1.2)2÷0.42
(5)-22-(-3)3×(-1)4-(-1)5
(6)[45-(-+)×36]÷5.
答案和解析
(1)原式=(3
+5)+(-2-1)+(-3+5)=9-4+2=7;
(2)原式=-6.5×(-2)×(-3)×(-)=;
(3)原式=-5×7+7×(-7)-12×(-7)=7×(-5-7+12)=0;
(4)原式=×(-)-1.44÷0.16=-12-=-;
(5)原式=-4+27+1=24;
(6)原式=(45-28+33-30)×=20×=4.
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