Question

8．0.457×0.56×0.19×0.003積的末尾數(shù)字是4．

Answer 1

分析 要求0.457×0.56×0.19×0.003積的末尾數(shù)字是多少，分別用這幾個(gè)因數(shù)的末位的數(shù)字相乘，積的個(gè)位數(shù)字是幾，它們積的末尾數(shù)字就是幾．

解答 解：0.457的末位數(shù)是7，0.56的末位數(shù)是6，0.19末位數(shù)是9，0.003的末位數(shù)是3，
7×6×9×3=1134
1134個(gè)位上是4，所以0.457×0.56×0.19×0.003積的末尾數(shù)字是4．
故答案為：4．

點(diǎn)評(píng) 幾個(gè)因數(shù)末位數(shù)字相乘的積的個(gè)位數(shù)字是幾，這兩個(gè)數(shù)的積末尾數(shù)字一定是幾．