试题 试卷
题型：填空题 题类：常考题 难易度：普通
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#}
8.56×3.6+8.56×6.4 36.9÷0.25÷4
101×0.43-0.43 32×0.25×12.5
试题篮
