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3.8+3.545.94+10.74.8×1.2=2.15×2.1=3.05-2.910-3.140.32×1.2=3.25×1.8=15.4+2.978.25+1.559.8×1.3=4.8×1.3=11.65-7.391.3×0.25=3.14×1.5=9.34×1.4=10.2-8.75
4.8×0.25=
2.6×0.8=
1.87×2.3=