57×0.957×1.7 6.3×1.0163×0.101 8.5÷0.58.5÷1.7
1.34÷0.25=÷1=
2.8÷0.85○2.8 253.1÷0.1○253.1 ×10
÷=
6.8×2= 4.2×4= 2.1×5= 1.9×0.1= 6×0.5=