1.65÷1.561 1.528528
8.74÷0.978.74×0.97 16.7÷1.25÷0.816.7÷(1.25×0.8)
3.14÷>3.14 4.67÷<4.67
7.3÷0.87.3 4.2×1.014.2
1.2×0.930.93 2.5÷1.12.5
2.4×3.6=,×0.36=86.4,8.64÷=2.4。