六年级数学上册分数简便运算计算题

六年级数学上册分数简便运算计算题


简介:
××5 =×5× =3× = 乘法交换律 (+)×4 =×4+×4 =+1 =1 乘法分配律 ××3 =×3× =2× = 乘法交换律 87× =(86+1)× =86×+1× =3 乘法分配律 ×+× =×(+) =×1 = 乘法结合律 ( - )×27 =×27 - ×27 =24-4 =20 乘法分配律