0.999×0.9+0.1简便运算?
3个回答
2022-12-03
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0.999×0.9+0.1
=(1-0.001)x0.9+0.1
=0.9+0.1-0.0009
=1-0.0009
=0,9991
=(1-0.001)x0.9+0.1
=0.9+0.1-0.0009
=1-0.0009
=0,9991
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0.999×0.9+0.1简便运算?
0.999×0.9+0.1
=0.999×(1-0.1)+0.1
=0.999-0.0999+0.1
=0.999+0.0001
=0.9991
0.999×0.9+0.1
=0.999×(1-0.1)+0.1
=0.999-0.0999+0.1
=0.999+0.0001
=0.9991
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0.999×0.9+0.1 = 0.999×(1 - 0.1)+0.1
=0.999 - 0.999×0.1+0.1
= 0.999 + (0.1 - 0.0999 )
=0.999 + 0.0001
=0.9991
=0.999 - 0.999×0.1+0.1
= 0.999 + (0.1 - 0.0999 )
=0.999 + 0.0001
=0.9991
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