来自宋李俊的问题
计算52.4×34+45.6×0.75+2÷11312+34+78+1516+3132+6364+127128.
计算
52.4×34+45.6×0.75+2÷113
12+34+78+1516+3132+6364+127128.
1回答
2020-05-09 09:29
计算52.4×34+45.6×0.75+2÷11312+34+78+1516+3132+6364+127128.
计算
52.4×34+45.6×0.75+2÷113
12+34+78+1516+3132+6364+127128.
(1)52.4×34+45.6×0.75+2÷113=(52.4+45.6+2)×34=100×34=75;(2)12+34+78+1516+3132+6364+127128=1-12+1-14+1-18+、+1-1128=(1+1+1+1+1+1+1)-(12+14+、+1128)=7-(1-12+12-14+、+164-1128)=7-127128=6...