1.25x4 1.25x4的简便计算
1.25x4+1.25x4 解:简便计算 =1.25x(4+4) 乘法分配律 =1.25x8 =10 祝学习进步。
2.5x2.5x2.5x1.25x1.25x4x4x4x4x4x4简便计算 求学霸指导
=10×10×10×5×5×4 =1000×25×4 =1000×100 =100000
有简便方法计算1.25x4÷1.25x4
1.25÷1.25×4×4=16,就是这样的!
简便运算1.25x4÷1.25x4?
= (1.25 × 1\/1.25)( 4 × 4)= 1 × 16 = 16 答:1.25x4÷1.25x4等于16
0.25×1.25×4 这有什么简便计算?
解:方法一:0.25×1.25×4 =0.25×4×1.25 =1×1.25 =1.25方法二: 0.25×1.25×4 =1\/4×5\/4×4 =5\/4 =1.25方法一直接运用乘法交换律,方法二直接化成分数在计算,不懂可追问!
1.25x1.24 简便运算
解:原式=1.25×(4×0.31)=1.25×4×0.31 =5×0.31 =1.55
1.25x1.3x4,怎么简便计算?
1.25x1.3x4 =1.25x4×1.3 =5×1.3 =6.5
1.25x1.3x4用简便方法计算
1.25x1.3x4 =1.25x4x1.3 =(1+0.25)x4x1.3 =(4+1)x1.3 =5x1.3 =6.5
1.25x4+1.25x5
回答:12.5-1.25=12.25
1.25x4.4到底怎么算?
1.25x4.4 =1.25x4x1.1 =5x1.1 =5.5