0.2×0.4=
2.5×0.4=
0.8×50=
12.5×8=
0.25×4=
3.99×1=
0×3.52=
8.3×0.88.3 2.5×1.61.6×2.5 3.7×0.293.9×0.34
8.3×0.80.8 0.98×11 0.45×5245×0.52
⑴0.2×0.4=
8.2+1.8=
100-35.22=
⑵2.5×0.4=
2.4×5=
0.22×4=
⑶0.9-0.52=
0.1×3.52=
⑷8.7×(2.86+7.14)=
2.5×6.45×4=
163×1.8163 163×0.18163
2.7×12.7× (0.8+0.2) 7.3×6.464×0.73
3.2÷0.01= 2.2×9.9= 305-199=
2.05×4= 8×12.5%=