试题 试卷
题型：填空题 题类：常考题 难易度：普通
12.12×11-11.11×12
= (12+____)×11-(____+0.11)×12
=12×11+0.12×11-____-0.11×12
=____×11-____×12
=0.01×____×11-0.01×____×12
=____×(12×11-11×12)
=____×
=0
0.9+9.9+99.9+999.9
=(0.9+0.1)+(9.9+0.1)+{#blank#}1{#/blank#}+(999.9+0.1)-0.1×{#blank#}2{#/blank#}
={#blank#}3{#/blank#}-{#blank#}4{#/blank#}
={#blank#}5{#/blank#}
试题篮
