標題:
我想知0.39 x 39 + 6.1 x 3.9 的簡易方法
發問:
最佳解答:
因0.39*39=3.9*3.9 即0.39 x 39 + 6.1 x 3.9 =3.9*3.9+6.1*3.9 =3.9*(3.9+6.1) =3.9*10 =39
其他解答:
0.39x39+61x3.9 =39x39x61x39|||||0.39x 39 + 6.1 x 3.9 =3.9x3.9+ 6.1 x 3.9 =(3.9+6.1)x3.9 =10x3.9 =39|||||0.39 x 39 + 6.1 x 3.9 =15.21+ 6.1 x 3.9 =15.21+23.79 =39|||||0.39 x 39 + 6.1 x 3.9 =3.9x3.9+6.1x3.9 =3.9(3.9+6.1) =3.9x10 =39 或 0.39x39+6.1x3.9 =0.39x39+61x0.39 =0.39(39+61) =0.39x100 =39 或 0.39x39+6.1x3.9 =0.39x39+0.61x39 =39(0.39+0.61) =39x1 =39|||||非常易 睇住啦 0.39*39+6.1*3.9 呢條數好簡單姐 你把3.9除以10 再把6.1乘以10 明唔明 未明? 唔緊要 簡單d黎講 姐係6.1*3.9係一個縮小若干 另一擴大若干 條數係咁計 0.39*39+6.1*3.9 =0.39*39+61*0.39 乘法分配律學左未 =0.39*(39+61) =0.39*100 =39 完整d: 0.39*39+6.1*3.9 =0.39*39+61*0.39 =0.39*(39+61) =0.39*100 =39|||||0.39 x 39 + 6.1 x 3.9 = 3.9 X 3.9 + 6.1 X 3.9 [ 即係前面的0.39除了10, 後面的39除番10就平衡返] = 3.9 X (3.9 + 6.1) = 3.9 X 10 = 39
我想知0.39 x 39 + 6.1 x 3.9 的簡易方法
發問:
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我想知0.39 x 39 + 6.1 x 3.9 的簡易方法最佳解答:
因0.39*39=3.9*3.9 即0.39 x 39 + 6.1 x 3.9 =3.9*3.9+6.1*3.9 =3.9*(3.9+6.1) =3.9*10 =39
其他解答:
0.39x39+61x3.9 =39x39x61x39|||||0.39x 39 + 6.1 x 3.9 =3.9x3.9+ 6.1 x 3.9 =(3.9+6.1)x3.9 =10x3.9 =39|||||0.39 x 39 + 6.1 x 3.9 =15.21+ 6.1 x 3.9 =15.21+23.79 =39|||||0.39 x 39 + 6.1 x 3.9 =3.9x3.9+6.1x3.9 =3.9(3.9+6.1) =3.9x10 =39 或 0.39x39+6.1x3.9 =0.39x39+61x0.39 =0.39(39+61) =0.39x100 =39 或 0.39x39+6.1x3.9 =0.39x39+0.61x39 =39(0.39+0.61) =39x1 =39|||||非常易 睇住啦 0.39*39+6.1*3.9 呢條數好簡單姐 你把3.9除以10 再把6.1乘以10 明唔明 未明? 唔緊要 簡單d黎講 姐係6.1*3.9係一個縮小若干 另一擴大若干 條數係咁計 0.39*39+6.1*3.9 =0.39*39+61*0.39 乘法分配律學左未 =0.39*(39+61) =0.39*100 =39 完整d: 0.39*39+6.1*3.9 =0.39*39+61*0.39 =0.39*(39+61) =0.39*100 =39|||||0.39 x 39 + 6.1 x 3.9 = 3.9 X 3.9 + 6.1 X 3.9 [ 即係前面的0.39除了10, 後面的39除番10就平衡返] = 3.9 X (3.9 + 6.1) = 3.9 X 10 = 39
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