Question

7.59×0.1+0.5×75.9+0.049×759简便方法？

Answer 1

7.59×0.1+0.5×75.9+0.049×759
=75.9×0.01+0.5×75.9+0.49×75.9
=75.9×(0.01+0.5+0.49)
=75.9×(0.50+0.5)
=75.9×1
=75.9

Answer 2

7.59×0.1+0.5×75.9+0.049×759简便方法？你好，仔细观察一下这个算式，就会发现它有一定的规律，我们可以先把它变换为7.59×0.1+7.59×5+7.59×4.9，也就是7.59×（0.1+5+4.9）=75.9。

Answer 3

7.59x0.1+0.5x75.9+0.049x759
＝7.59x0.1+7.59x5+7.59x4.9
＝7.59x（0.1+5+4.9）
＝7.59x10
＝75.9

Answer 4

简便方法是直接提取公约数7.59得
7.59x0.1+0.5x75.9+0.049x759
=7.59x(0.1+5+4.9)
=7.59x10
=75.9

注意小数点的改变哦！

Answer 5

7.59x0.1+0.5x75.9+0.049x759
=75.9x0.01+0.5x75.9+0.49x75.9
=75.9（0.01+0.5+0.49）
=75.9x1
=75.9