Question

口算 9.5×100=	1.25×8	0.25×0.9×4=	1.87×0=
3.5-1.5=	1.2×0.4=	3.6×0.5=	0.6×5=
0.24+0.6=	0.64×0.03=	7.8+2.2-1.5=	8×0.05=
0.125×8=	1.3×4=	0.4×0.6=	3×0.08=
0.35×2=	2.9×0.3=	10-0.9=	5.67×0=
0.8×0.01=	2.5×0.2=	2.4×0.3=	1.6×0.25=
0.17×0.3=	15×0.01=	10×0.07=	0.7×0.05=
0.2×0.05=	7.8×0.01=	0.2×0.26=	0.04×4=
12.4+2.1=	0.08×0.5=	0.14×4=	9×2.5+9×1.5=
1.8×0.5=	2.3×5=	0.3×3.6=	8×0.9+8×2.1=
2.5×4=	0.8+2.7×2=	0.05×7=	4.8+2.1+7.9=
3.4-1.8=	2.5+0.2×2=	0.02×0.1=	5.4-2.8=
0.3×0.2=	3.5×2×0.1=	0.3×0.3=	0×10.3×2.2=
0.12×0.7=	0.2×0.5=	0.92×0.4=	6.7-1.43=
1.2×4=	1.3×2=	1.2×0.3=	4.6+5.08=

Answer 1

分析：本題據小數加減法、乘除法及四則混合運算的運算法則計算即可．

解答：解：

9.5×100=950	1.25×8=10	0.25×0.9×4=0.9	1.87×0=0
3.5-1.5=2	1.2×0.4=0.48	3.6×0.5=1.8	0.6×5=3
0.24+0.6=0.84	0.64×0.03=0.0192	7.8+2.2-1.5=8.5	8×0.05=0.4
0.125×8=1	1.3×4=5.2	0.4×0.6=0.24	3×0.08=0.24
0.35×2=0.7	2.9×0.3=0.87	10-0.9=9.1	5.67×0=0
0.8×0.01=0.008	2.5×0.2=0.5	2.4×0.3=0.72	1.6×0.25=0.4
0.17×0.3=0.051	15×0.01=0.15	10×0.07=0.7	0.7×0.05=0.035
0.2×0.05=0.01	7.8×0.01=0.078	0.2×0.26=0.052	0.04×4=0.16
12.4+2.1=14.5	0.08×0.5=0.04	0.14×4=0.56	9×2.5+9×1.5=36
1.8×0.5=0.9	2.3×5=11.5	0.3×3.6=1.08	8×0.9+8×2.1=24
2.5×4=10	0.8+2.7×2=6.2	0.05×7=0.35	4.8+2.1+7.9=14.8
3.4-1.8=1.6	2.5+0.2×2=2.9	0.02×0.1=0.002	5.4-2.8=2.6
0.3×0.2=0.06	3.5×2×0.1=0.7	0.3×0.3=0.09	0×10.3×2.2=0
0.12×0.7=0.084	0.2×0.5=0.1	0.92×0.4=0.368	6.7-1.43=5.27
1.2×4=4.8	1.3×2=2.6	1.2×0.3=0.36	4.6+5.08=9.68

點評：由于本題算式較多，完成時要細心，然后快速準確得出答案．