18·76×9·9+18·76 0·25×16·2×0·4 4·8×9·9 7·09×10·8 -0.8×7.09 4.8×100.1 4.2 ÷3.5 32
问题描述:
18·76×9·9+18·76 0·25×16·2×0·4 4·8×9·9 7·09×10·8 -0.8×7.09 4.8×100.1 4.2 ÷3.5 32
答
18.76*9.9+18.76=18.76*10+18.76-1.876=187.6+18.76-1.876=204.4840.25*16.2*0.4=0.25*0.4*16.2=0.01*16.2=0.1624.8*9.9=4.8*10-0.48=48-0.48=47.527.09*10.8-0.8*7.09=7.09*(10.8-0.8)=7.09*10=70.94.8*100.1=4.8*1...