Question

直接寫出得數(shù)． 12.4+2.1=	0.08×0.5=	0.14÷0.02=	2.5+0.2×2=
9.5×100=	1.25×8=	1÷4=	0.25×0.9×4=
3.5-1.5=	1.2÷0.4=	3.6×0.5=	8×0.9+8×2.1=
6.3÷0.09=	2.9×0.3=	0.95÷5=	7.8+2.2-1.5=
1.6×0.25=	0.1÷0.5=	3.5×2×0.1=	2.1÷0.2÷3.5=

Answer 1

解：

12.4+2.1=14.5	0.08×0.5=0.04	0.14÷0.02=7	2.5+0.2×2=2.9
9.5×100=950	1.25×8=10	1÷4=0.25	0.25×0.9×4=0.9
3.5-1.5=2	1.2÷0.4=3	3.6×0.5=1.8	8×0.9+8×2.1=24
6.3÷0.09=70	2.9×0.3=0.87	0.95÷5=0.19	7.8+2.2-1.5=8.5
1.6×0.25=0.4	0.1÷0.5=0.2	3.5×2×0.1=0.7	2.1÷0.2÷3.5=3

分析：本題根據(jù)小數(shù)加、減、乘、除及四則混合運(yùn)算的運(yùn)算法則計(jì)算即可．
點(diǎn)評(píng)：完成本題要注意分析式中數(shù)據(jù)，能簡(jiǎn)算的要簡(jiǎn)算．