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问题:

计算下列各题:(1) 0 + 7 =(2) 5 × 0 =(3) 9 0 =(4) 0 + 8 +

答案:

填写正确的数字:(1) 0 + 63 = 63(2) 0 × 58 = 0(3) 0 25 = 25