Question

我能算得又對(duì)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=

Answer 1

分析：根據(jù)小數(shù)加法、減法、乘法、除法以及四則混合運(yùn)算的計(jì)算法則直接計(jì)算即可解答，注意有括號(hào)的要先算括號(hào)里面的．

解答：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．

點(diǎn)評(píng)：本題主要考查了小數(shù)四則運(yùn)算，較為簡(jiǎn)單．