问题 解答题 口算高速路．476-98=1×45=3×35÷3×35=57×2125=1÷45=0.25×0.4=0.99×617×0=56×115×87= 答案 476-98=3781×45=453×35÷3×35=92557×2125=351÷45=540.25×0.4=0.10.99×617×0=056×115×87=87故答案为：378，45，925，35，54，0.1，0，87．
