3.4×43.4×2 75×0.130.13×7.5
7.9×9+0.797.9×10 7.6×1276×1.2
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
163×1.8163 163×0.18163
2.7×12.7× (0.8+0.2) 7.3×6.464×0.73