问题 解答题 直接写得数. 79×45=15+17=6.3÷0.01=2.5+1.25=6-78-18=710÷12=390×0.02=510-240=0.13=10×79÷10×79= 答案 79×45=35,15+17=1235,6.3÷0.01=630,2.5+1.25=3.75,6-78-18=5,710÷12=75,390×0.02=7.8,510-240=270,0.13=0.001,10×79÷10×79=4981.