问题 解答题 直接写出得数.1-9=56×120=20×15=57×25=517×0=35÷3=4÷23=78÷78=34×34=14+13=14+23=35-12=45-23= 答案 1-9=-8,56×120=100,20×15=4,57×25=27,517×0=0,35÷3=15,4÷23=6,78÷78=1,34×34=916,14+13=712,14+23=1112,35-12=110,45-23=215.故答案为:-8,100,4,27,0,15,6,1,916,712,1112,110,215.