(广州)用简便方法计算 (1)8.37﹣3.25﹣(1.37+2.25)(2) 3.375÷5﹣× (3)9÷13+13÷9+11÷13+14÷9+6÷13 (4)9966×6+6678×18(5) (6)3762÷38+82917÷83
x : =:
x - x=18.7
15.8-(6+÷12.5%)
10-÷×1
325×0.36+6.75×36