Question

7.7×5.6+46×0.28的简便计算？

Answer 1

7.7×5.6+46×0.28
=7.7×20×0.28+46×0.28
=（7.7×20+46）×0.28
=（154+46）×0.28
=200×0.28
=56

Answer 2

7.7×5.6+46×0.28
＝7.7×0.28×20+46×0.28
＝7.7×10×2×0.28+23×2×0.28
＝77×0.56+23×0.56
＝（77+23）×0.56
＝100×0.56
＝56

Answer 3

7.7×5.6+46×0.28
=77×0.56+23×2×0.28
=(77+23)×0.56
=100×0.56
=56

Answer 4

Answer 5

在一条没有括号的式子中，含有加减乘除，按照计算先后顺序，我们应该先计算乘法与除法，这条式子我们需要先计算乘法后算加法，结果如下:
43.12+12.88=56