计算(1)22-(-4)+(-2)+4; (2)(-0.6)...
计算(1)22-(-4)+(-2)+4;(2)(-0.6)+1.7+(+0.6)+(-1.7)+(-9);(3)(-5)×56×(-95)×14×0;(4)(-12.5)...
计算(1)22-(-4)+(-2)+4; (2)(-0.6)+1.7+(+0.6 )+(-1.7 )+(-9 );(3)(-5)×56×(-95)×14×0; (4)(-12.5)×(-2.5)×(-4)×(-8).(5)-6-(-3.5)+(-2.5)(6)-32-17+|-23|(7)(?225)?(?4.7)?(+0.5)+(+2.4)+(?3.2)(8)(+16)+(-29)-(-7)-(+11)+(+9)(9)(-3.1)-(-4.5)+(+4.4)-(+1.3)+(-2.5)
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(1)原式=22+4-2+4
=28;
(2)原式=[(-0.6+0.6)]+[(1.7-1.7)-9]
=-9;
(3)原式=0;
(4)原式=[(-12.5)×(-4)]×[(-2.5)×(-8)]
=50×20
=1000;
(5)原式=-6+3.5-2.5
=-5;
(6)原式=-32-17+23
=-16;
(7)原式=-2.4+4.7-0.5+2.4-3.2
=2.3-0.5+2.4-3.2
=1;
(8)原式=15-29+7-11+9
=-9;
(9)原式=-3.1+4.5+4.4-1.3-2.5
=1.4+4.4-1.3-2.5
=5.8-1.3-2.5
=2.
=28;
(2)原式=[(-0.6+0.6)]+[(1.7-1.7)-9]
=-9;
(3)原式=0;
(4)原式=[(-12.5)×(-4)]×[(-2.5)×(-8)]
=50×20
=1000;
(5)原式=-6+3.5-2.5
=-5;
(6)原式=-32-17+23
=-16;
(7)原式=-2.4+4.7-0.5+2.4-3.2
=2.3-0.5+2.4-3.2
=1;
(8)原式=15-29+7-11+9
=-9;
(9)原式=-3.1+4.5+4.4-1.3-2.5
=1.4+4.4-1.3-2.5
=5.8-1.3-2.5
=2.
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