7.2*5.8+0.72*42简便运算高手请帮帮忙
来源:学生作业帮助网 编辑:作业帮 时间:2024/04/29 20:21:29
xRn@*R4<;/#'4@S!bIB߀K"RHY\i43h=GsNVNdBG~Գ6,]K}/N_0oU>,YSKq4ݳtU~{ՉOgY]'gy=xUMN$q+BA0H2ZH` yIH<HQ聾Zi,jkA@Łrr+dBJ ac:Hl9p:O-גyθ`s
6sկ?ё]bϰ0ێW//N_]cl
7.2*5.8+0.72*42简便运算高手请帮帮忙
7.2*5.8+0.72*42简便运算高手请帮帮忙
7.2*5.8+0.72*42简便运算高手请帮帮忙
=7.2*5.8+7.2*4.2
=7.2(5.8+4.2)
7.2*5.8+0.72*42简便运算高手请帮帮忙
=7.2×5.8+7.2×4.2
=7.2×(5.8+4.2)
=7.2×10
=72
0.72×10×5.8+0.72×42
=0.72×58+0.72×42
=0.72×(58+42)
=0.72×100
=72
7.2×5.8+0.72×42=7.2×5.8+7.2×4.2=7.2×(5.8+4.2)=7.2×10=72
(7.2*5.8)+(5.8*42)
等于,7.2×5.8+7.2×42=7.2×10=72