0.23×0.8=
0.184
0.184
,得數(shù)保留兩位小數(shù)約是
0.18
0.18
分析:本題先要據(jù)小數(shù)乘法的計(jì)算法則計(jì)算出0.23×0.8的積是多少,然后據(jù)四舍五入的原則得出保留兩位小數(shù)后約是多少.
解答:解:0.23×0.8=0.184≈0.18.
故答案為:0.184,0.18.
點(diǎn)評:在求的近似值的時候一般據(jù)四舍五入的原則取值.
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