第30页

信息发布者：
D
B
A
=$1-(\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}+\frac{1}{32})$
=$1-(1-\frac{1}{32})$
=$\frac{1}{32}$
=$(44+56)×7÷2$
=$100×7÷2$
=$350$
=$(99999\frac{4}{5}+\frac{1}{5})+(9999\frac{4}{5}+\frac{1}{5})+(999\frac{4}{5}+\frac{1}{5})+(99\frac{4}{5}+\frac{1}{5})+(9\frac{4}{5}+\frac{1}{5})$
=$100000+10000+1000+100+10$
=$111110$
=$0.75×23+0.75×32+0.75×5$
=$0.75×(23+32+5)$
=$0.75×60$
=$45$
$(18+10)×2=56$(厘米)
$3.14×8+12×2=49.12$(厘米)
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