Question

0.25x5.78x4的简便方法是运用乘法交换律和结合律

0.25x5.78x4的简便方法是运用乘法交换律和结合律,对吗

Answer 1

对。0.25x5.78x4＝0.25x4x5.78　　（乘法交换律）＝(0.25x4)x5.78　 （乘法结合率）＝1x5.78＝5.78

Answer 2

是的！4*0.25*5.78=1*5.78=5.78

Answer 3

对0.25x5.78x4=(0.25x4)x5.78=1x5.78=5.78

Answer 4

对