作业帮6.6乘以7.8加3.3乘以4.4,用简便方法计算
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6.6乘以7.8加3.3乘以4.4,用简便方法计算
6.6乘以7.8加3.3乘以4.4,用简便方法计算
6.6乘以7.8加3.3乘以4.4,用简便方法计算
6.6×7.8＋3.3×4.4
=6.6×7.8＋（3.3×2）×2.2……变一变就简便
=6.6×（7.8＋2.2）
=6.6×10
=66
6.6乘以7.8加3.3乘以4.4,用简便方法计算
6.25乘以6.6加3.3乘以6又4分之1加1.1乘以625%
简算：4.4乘以57.8加45.3乘以5.6.
4.8乘以7.8加78乘以0.5用减便计算
7.8乘以4.2加2.2乘以4.2等于(7.8+2.2)乘以4.2这是根据( )简算
9.99乘以22.2加33.3乘以3.34
9.99乘以22.2加33.3乘以3.34
9999乘以7加1111乘以37
26乘以187加169乘以2
111111乘以999999加999999乘以555555
一乘以二乘以三分之一加2乘以3乘以4分之一+3乘以4乘以5分之1+……+48乘以49乘以50分之1.
2000乘以1999减1999乘以1998加1998乘以1997减1997乘以1996,简算
五年级 0.15乘以0.8乘以12.5加8乘以3乘以0.125怎么简便算
52乘以76加47乘以76加76
1200乘以5加1800乘以15加2500乘以4加3000乘以2加5000除以27等于?
999乘以99加99
99乘以38加38.
1999乘以99加1999