问题 解答题 口算速算.24÷60%=60÷80%=400×(1+25%)=60×15%=50×120%=(18+12)×8=34÷5=48×25%= 答案 24÷60%=4060÷80%=75400×(1+25%)=50060×15%=950×120%=60(18+12)×8=534÷5=32048×25%=12.