Question

直接寫出得數(shù)． 1.5×4=	1÷0.25=	5.4÷0.01=
0.6×0.5=	0.09÷0.1=	10-6.02=
7×0.08=	0.8÷0.02=	0.32÷0.04=
6.8×0.5=	1.25×8×0=	15.5×11-15.5=

Answer 1

分析：根據(jù)小數(shù)加減乘除的計算方法進(jìn)行計算；
15.5×11-15.5根據(jù)乘法分配律進(jìn)行簡算．

解答：解：

1.5×4=6	1÷0.25=4	5.4÷0.01=540
0.6×0.5=0.3	0.09÷0.1=0.9	10-6.02=3.98
7×0.08=0.56	0.8÷0.02=40	0.32÷0.04=8
6.8×0.5=3.4	1.25×8×0=0	15.5×11-15.5=155

點評：口算時，注意運(yùn)算符號和數(shù)據(jù)，然后再進(jìn)一步計算．