我能算得又对又快
5×0.4=10-0.9=3.5+6.5=36.3÷100=6.2÷0.2=0.99+0.11=0.25×0.8=5.6÷0.4=2.14-1.4=4.2×0.1=0.21÷0.7=1.21÷1.1=3.2×0+3.2=7.4÷（1-0.9）=3.5-1.5×2=1.1-1.1÷1.1=
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解：5×0.4=2??????????? ?10-0.9=9.1????????????? ?3.5+6.5=10???????????? ?? 36.3÷100=0.363
6.2÷0.2=31???????????? ?0.99+0.11=1.1??????????? 0.25×0.8=0.2???????????? 5.6÷0.4=14
2.14-1.4=0.74??????????? 4.2×0.1=0.42??????????? 0.21÷0.7=0.3???????????? 1.21÷1.1=1.1
3.2×0+3.2=3.2?????????? 7.4÷（1-0.9）=74????????3.5-1.5×2=0.5??????????? 1.1-1.1÷1.1=0.1．
解析分析：根据小数加法、减法、乘法、除法以及四则混合运算的计算法则直接计算即可解答，注意有括号的要先算括号里面的．
点评：本题主要考查了小数四则运算，较为简单．