问题 解答题 口算.8×125×55.25×860-3.9-6.14.5+0.759÷60+0.80.1×5.1. 答案 8×125×5=50005.25×8=4260-3.9-6.1=504.5+0.75=5.159÷60+0.8=0.950.1×5.1=0.51