0.7+0.6= 0.05×0.4= 2.4-1.9= 2.8÷0.7=
0.12×100= 13.5÷10= 0.72×2= 0.6×1.2=
3.8×0.01= 5.5×0.4= 0.4×50= 1.09×100=
1-0.03= 0.16+7.4= 0.27÷3= 5.1÷3=
1.3×2.8= 0.13×0.28= 36.4÷2.8=
48.5÷1.648.5 1.81.8×0.29 0.98×1.50.98÷1.5
0.25×3.63.6 7.26÷0.57.26 6.25×0.256.25÷4
方程:
方程: