Question

3.5×0.4=	2.5×0.4=	2.3×0.2=	2.1÷0.3=
7.1×0.4=	4.5÷0.15=	1-0.07=	0.42÷0.7=
12.4÷4=	2.5+1.5=	5.9×0.2=	0.48÷0.8=
0.25×1.3×4=	20÷0.01=	9÷0.01=	5.5÷1.1=
4.79+15.81=	0.3÷0.03=	0.2×0.1=	3.6+6.4=
0.56÷0.28=	1.2×0.3=	6.7-5.6=	7.25÷0.5=
4.2÷0.21=	4.3×0=	0.15÷0.5=	3.5×4=
5.32-5.3=	1.25×3.4×8=	9.6÷3.2=	3.6+2.4=
4.3-2.7+5.7=	7.2-5.6=	1.8÷0.9=	8.2×0.5=
5.6÷0.4=	8.5÷5=	5.6×0.5=	9.8÷0.2=
3.56×0.2=	3.4+1.5+4.6=	3.4×0.04=	6.12+3.48=
6÷0.12=	7.6÷4=	3.4×0.5=	5.2-3.2-1.8=
6-3.8=	7.5÷3=	3.5+5.4=	3×2.5=
3.5+6.5=	7-6.23=	8÷0.4=	0.25×2.5=
7.5÷0.5=	0.89-0.48=	3.5×0.8=	5.9-（3.2+0.9）=

Answer 1

分析：按照計算順序和計算法則直接進行計算即可．

解答：

解：3.5×0.4=1.4	2.5×0.4=1	2.3×0.2=0.46	2.1÷0.3=7
7.1×0.4=2.84	4.5÷0.15=30	1-0.07=0.93	0.42÷0.7=0.6
12.4÷4=3.1	2.5+1.5=4	5.9×0.2=1.18	0.48÷0.8=0.6
0.25×1.3×4=1.3	20÷0.01=2000	9÷0.01=900	5.5÷1.1=5
4.79+15.81=20.6	0.3÷0.03=10	0.2×0.1=0.02	3.6+6.4=10
0.56÷0.28=2	1.2×0.3=0.36	6.7-5.6=1.1	7.25÷0.5=14.5
4.2÷0.21=20	4.3×0=0	0.15÷0.5=0.3	3.5×4=14
5.32-5.3=0.02	1.25×3.4×8=34	9.6÷3.2=3	3.6+2.4=6
4.3-2.7+5.7=7.3	7.2-5.6=1.6	1.8÷0.9=2	8.2×0.5=4.1
5.6÷0.4=14	8.5÷5=1.7	5.6×0.5=2.8	9.8÷0.2=49
3.56×0.2=0.712	3.4+1.5+4.6=9.5	3.4×0.04=0.136	6.12+3.48=9.6
6÷0.12=50	7.6÷4=1.9	3.4×0.5=1.7	5.2-3.2-1.8=0.2
6-3.8=2.2	7.5÷3=2.5	3.5+5.4=8.9	3×2.5=7.5
3.5+6.5=10	7-6.23=0.77	8÷0.4=20	0.25×2.5=0.625
7.5÷0.5=15	0.89-0.48=0.41	3.5×0.8=2.8	5.9-（3.2+0.9）=1.8

點評：此題考查學生的計算能力，計算時要細心．