68.75乘16加3.28乘687.5加197乘6.875加0.315乘6875＝？简便运算

显示全部楼层 · 2011-7-26 12:14:23

68.75乘16加3.28乘687.5加197乘6.875加0.315乘6875=68.75×16+32.8×68.75+19.7×68.75+31.5×68.75=68.75×（16+32.8+19.7+31.5）=68.75×100=6875...

千问 · 2011-7-26 12:14:23

你好！ 68.75×16+3.28×687.5+197×6.875+0.315×6875=68.75×16+32.8×68.75+19.7×68.75+31.5×68.75=68.75×（16+32.8+19.7+31.5）=68.75×100=6875希望我的回答对你有所帮助。...

千问 · 2011-7-26 12:14:23

=68.75×16+68.75×32.8+68.75×19.7+68.75×31.5=68.75×(16+32.8+19.7+31.5)=68.75×100=6875...

68.75乘16加3.28乘687.5加197乘6.875加0.315乘6875＝？ 简便运算