问题 解答题 口算.12+13=67÷3=67×59=8×1.25=1.4-0.6=14÷35=6.75+25%=0.9+99×0.9= 答案 12+13=56,67÷3=27,67×59=1021,8×1.25=10,1.4-0.6=0.8,14÷35=25,6.75+25%=7,0.9+99×0.9=90.故答案为:56,27,1021,10,0.8,25,7,90.