如题所述
应用乘法分配律进行简便计算:
102×0.45
=(100+2)×0.45
=100×0.45+2×0.45
=45+0.9
=45.9
102×0.45
=(100+2)×0.45
=100×0.45+2×0.45
=45+0.9
=45.9
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第1个回答 2022-12-10
102×0.45
=100×0.45+2×0.45
=45+0.9
=45.9
=100×0.45+2×0.45
=45+0.9
=45.9
第2个回答 2022-12-10
102×0.45
(2×0.45)×51
0.9×51
45.9
(2×0.45)×51
0.9×51
45.9