21.1*0.99 用递等式计算
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21.1*0.99 用递等式计算
21.1×0.99
= 21.1×(1 - 0.01)
= 21.1×1 - 21.1×0.01
= 21.1 - 0.211
= 20.889
21.1*0.99
=21.1*(1-0.01)
=21.1*1-21.1*0.01
=21.1-0.211
=20.889
21.1*0.99 用递等式计算
21.1×0.99
= 21.1×(1 - 0.01)
= 21.1×1 - 21.1×0.01
= 21.1 - 0.211
= 20.889
21.1*0.99
=21.1*(1-0.01)
=21.1*1-21.1*0.01
=21.1-0.211
=20.889