六年级数学上册《分数乘法》简便计算题

六年级数学上册《分数乘法》简便计算题


简介:
-× =× =× = ×2.4 =×2.4+×2.4 =2+0.9 =2.9 ×4+0.25×4+ =×4+×4+×1 =× =×10 =2.5