Question

0.31✖️0.69➗0.31✖️0.69巧算

Answer 1

0.31×0.69÷0.31×0.69
＝（0.31÷0.31）×（0.69×0.69）
＝1×0.4761
＝0.4761
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Answer 2

0.31✖️0.69➗0.31✖️0.69
=0.31➗0.31✖️0.69✖️0.69
=1✖️0.69✖️0.69
=0.4761

Answer 3

0.31✖️0.69➗0.31✖️0.69巧算
=（0.31÷0.31）x（0.69x0.69）
=1x0.4761
=0.4761