比比谁先到对岸. 7.5﹣4.3= 2.18+6.72= 7﹣0.99= 0.47+6= 4.4+0.39= 6.3+3.6= 0.95﹣0.32= 2.4+7.3= 10.7﹣5.7= 5.4+5.04= 3.74﹣1.44= 4﹣0.01=