Question

0.25×1.9×4等于多少脱式计算？

Answer 1

您好！
乘法中，见到25的倍数，就找4或8，再利用乘法交换率去做。
0.25*1.9*4
=0.25*4*1.9
=1*1.9
=1.9

Answer 2

0.25×1.9×4
=0.25X4X1.9
=1X1.9
=1.9

Answer 3

用乘法交换律，0.25*4*1.9=1.9

Answer 4

运用乘法交换律，
0.25×1.9×4
=(0.25×4)×1.9
=1×1.9
=1.9