1-0.9=0.32÷2=0.8×5=
0.9×0.1=3.11+2.22=0.36÷0.4=
12.5+12.5×7=8m-6m=a×a=
4.5÷9=

解:
1-0.9=0.1,0.32÷2=0.16,0.8×5=4,
0.9×0.1=0.09,3.11+2.22=5.33,0.36÷0.4=0.9,
12.5+12.5×7=100,8m-6m=2m,a×a=a2
4.5÷9=0.5.
故答案為:0.1,0.16,4,0.09,5.33,0.9,100,2m,a2,0.5.
分析:根據(jù)小數(shù)的加減乘除計(jì)算的方法進(jìn)行計(jì)算,能簡算的要簡算,其中,12.5+12.5×7運(yùn)用乘法分配律進(jìn)行簡算.
點(diǎn)評:計(jì)算時(shí),要靈活運(yùn)用所學(xué)的知識,快速準(zhǔn)確的進(jìn)行計(jì)算.
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