题目

用你喜欢的方法计算。 (1) 35-1.37-0.63 (2) 0.65×6.4-0.65×5.4 (3) 5.01-1.9+4.99 (4) 0.5×99+0.5 答案: 35-1.37-0.63 =35-(1.37+0.63) =35-2 =33 0.65×6.4-0.65×5.4 =0.65×(6.4-5.4) =0.65×1 =0.65 5.01-1.9+4.99 =5.01+4.99-1.9 =10-1.9 =8.1 0.5×99+0.5 =0.5×(99+1) =0.5×100 =50
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