0.75*15+4.5*2.5 3.6*31.4+43.9*6.4 简便计算
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/15 10:10:35
0.75*15+4.5*2.5 3.6*31.4+43.9*6.4 简便计算
0.75*15+4.5*2.5
=45/4+45/4=45/2=22.5
3.6*31.4+43.9*6.4
=(1-6.4)*31.4+43.9*6.4
=31.4-6.4*(43.9-31.4)
=31.4-32/5*5/2
=31.4-16
=15.4
=45/4+45/4=45/2=22.5
3.6*31.4+43.9*6.4
=(1-6.4)*31.4+43.9*6.4
=31.4-6.4*(43.9-31.4)
=31.4-32/5*5/2
=31.4-16
=15.4
0.75*15+4.5*2.5 3.6*31.4+43.9*6.4 简便计算
6.4×2.5简便计算?
哪个人会简便计算?3.6×31.4+43.9×6.4
简便计算 99*2.5+2.5 6.4*4.5+3.6*4.5 6.25/0.25+0.75 99*2.5+2.5 42
6.4×2.5×1.25简便计算
0.75×15+4.5×2.5 3.6×31.4+43.9×6.4 的简便运算
3.6*0.75/3.6*0.75简便计算
简便计算:3.6÷0.75+0.75
3.6*0.75+3.6/4如何简便计算
6.4*8+3.6/0.125简便计算
5.28+3.6+4.72+6.4【简便计算】
7.8×3.6+78×6.4怎样简便计算