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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.
故答案为:0.1,0.16,4,0.09,5.33,0.9,100,2m,a2,0.5.
分析:根据小数的加减乘除计算的方法进行计算,能简算的要简算,其中,12.5+12.5×7运用乘法分配律进行简算.
点评:计算时,要灵活运用所学的知识,快速准确的进行计算.
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