Question

7.7×5.6+46×0.28的简便计算？

Answer 1

7.7×5.6+46×0.28
＝7.7×20x0.28十46×0.28
＝156x0.28＋46x0.28
＝（156＋46）x0.28
＝200x0.28
＝56

Answer 2

7.7×5.6+46×0.28
＝7.7×5.6+2.3×20×0.28
＝7.7×5.6+2.3×5.6
＝（7.7+2.3）×5.6
＝10×5.6
＝56

Answer 3

7.7×5.6+46×0.28
=7.7×5.6+4.6×2.8
=7.7×5.6+3.3×5.6
=（7.7+2.3）×5.6
=10×5.6
=56

Answer 4

简便计算如下：
7.7×5.6+46×0.28
＝77×0.56+23×0.56
＝（77+23）×0.56
＝100×0.56
＝56

Answer 5

简便计算：
7.7*5.6+46*0.28
=7.7*2*2.8+4.6*2.8
=2.8*(7.7*2+4.6)
=2.8*(15.4+4.6)
=2.8*20
=56