脱式计算,能简算的要简算 (53.76-17.6)÷1.8 (0.8×7+4.56÷1.9)×12.5
问题描述:
脱式计算,能简算的要简算 (53.76-17.6)÷1.8 (0.8×7+4.56÷1.9)×12.5
15.73-(2.17+0.73)-1.83
答
(53.76-17.6)÷1.8 =36.16÷1.8=20又4/45(0.8×7+4.56÷1.9)×12.5=0.8*12.5*7+2.4*12.5=0.8*12.5*7+0.8*12.5*3=10*(7+3)=10015.73-(2.17+0.73)-1.83=15.73-0.73-(2.17+1.83)=15-4=11...