39×57+39×44-39怎么简算?
1个回答
39X57+39X44—39
=39X(57+44—1)
=39X100
=3900
相关问题
39×0.15怎么简算
5976.82÷39.45×39.45(简算题)
88×39+22×44 怎么简便计算?
巧算(9-16/39×4)+(8-16/39×5)+...+(4-16/39×9)
13.9×9.9+1.39怎么简算?
简便运算:39×36+26.39×83-263.9×1.9=39×36+26.39×83-26.39×19=39×36+
39*44+78*28简算
39×8+6×39-39×4=39×4,运用了乘法的什么定律?
15.39×4.62+53.8×1.539简算
26.39×36+26.39×83-26.39×1.9用简便方法计算