题目内容
计算:
(1)0.65×14+87×65%-
(2)
(3)
(1)0.65×14+87×65%-
=0.65×14+87×0.65-0.65
=0.65×(14+87-1)
=0.65×100
=65
=0.65×14+87×0.65-0.65
=0.65×(14+87-1)
=0.65×100
=65
(2)
=
=
=8
=
=
=8
(3)
=76×
=
=
=1-1+1
=1
=76×
=
=
=1-1+1
=1
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