0.27×99的简便运算1.38×1.2×0.5的简便运算
0.34×0.5×0.6的简便方法,1.2×2.5+0.8×2.5的简便方法,(0.8+0.2)×6.7的简便方法,99×1.45的简...0.34×0.5×0.6的简便...
0.34×0.5×0.6的简便方法,1.2×2.5+0.8×2.5的简便方法,(0.8+0.2)×6.7的简便方法,99×1.45的简...
0.34×0.5×0.6的简便方法,1.2×2.5+0.8×2.5的简便方法,(0.8+0.2)×6.7的简便方法,99×1.45的简便方法,99×1.45+3×1.45-1.45×2的简便方法,99×1.45+1.45的简便方法,99×1.45+2×1.45-1.45的简便方法. 展开
0.34×0.5×0.6的简便方法,1.2×2.5+0.8×2.5的简便方法,(0.8+0.2)×6.7的简便方法,99×1.45的简便方法,99×1.45+3×1.45-1.45×2的简便方法,99×1.45+1.45的简便方法,99×1.45+2×1.45-1.45的简便方法. 展开
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0.34×0.5×0.6
=0.34*0.3
=1.02
1.2×2.5+0.8×2.5
=2,.5*(1.2+0.8)
=2.5*2
=5
(0.8+0.2)×6.7
=1*6.7
=6.7
99×1.45
=(100-1)*1.45
=145-1.45
=143.55
99×1.45+3×1.45-1.45×2
=99×1.45+1.45*(3-2)
=99×1.45+1.45
=1.45*(99+1)
=145
99×1.45+1.45
=(99+1)*1.45
=145
99×1.45+2×1.45-1.45
=99×1.45+(2-1)×1.45
=99×1.45+1.45
=(99+1)*1.45
=145
=0.34*0.3
=1.02
1.2×2.5+0.8×2.5
=2,.5*(1.2+0.8)
=2.5*2
=5
(0.8+0.2)×6.7
=1*6.7
=6.7
99×1.45
=(100-1)*1.45
=145-1.45
=143.55
99×1.45+3×1.45-1.45×2
=99×1.45+1.45*(3-2)
=99×1.45+1.45
=1.45*(99+1)
=145
99×1.45+1.45
=(99+1)*1.45
=145
99×1.45+2×1.45-1.45
=99×1.45+(2-1)×1.45
=99×1.45+1.45
=(99+1)*1.45
=145
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